15 - video Dailymotion

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Uploaded: 2025-12-16T09:30:04+00:00
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00:00:00how do you know how do you know how do you know how do you know the 11th number

00:00:07question the answer to the focal length of convex lens of refractive index 1.5 is 2

00:00:14centimeter here your effective index key focal length

00:00:17to do your risk radius kebara me to polini kissi maya alaga-alaga

00:00:22kya maana padega equi so it's cool radius come in a

00:00:26I'm going to go back to me I'm going to go back to me I'm going to go back to me I'm going to go

00:00:32back to me I'm going to go back to me minus one list of the air may have or don't know radius same

00:00:40so you're here has a new key value between one point five one point five minus one point five

00:00:46into two one are key value get ready though the panel lines of the challenge is key helps

00:00:52are key value do you are as a key juror put it here may be the left side of the panel

00:00:56to the question about the radar is the length of the focal length of the goal of this one

00:01:00like one point five one point two five my record is that I'm going to go back to me I'm going to

00:01:07get this to me power case at the time you buy it I'm going to go back to me I'm going to go back to

00:01:13the panel lines of the help some men are going to go back to me I'm going to go back to my point five

00:01:19upon me are centimeter Mitchell in the final answer because my centimeter my

00:01:25is little leather at a scale we are into to your total power yoga me of medium upon

00:01:32me F equivalent ke bharabar hooga yaha see kittany value is a key point to five into

00:01:40two helix the town yet those centimeter me of medium upon me and those see

00:01:48you do yeah you get an idea punch so I have key value kiss Ketan I got punch sentiment answer

00:01:53sent a lens maker see to me a bina kiya koon puch raya

00:02:02oh ah lens maker sebi banjaga time like a party a mother that but oh

00:02:09time like a body a luck bug jayega up at the sejada page

00:02:1375% page consume

00:02:16a question

00:02:17doctor

00:02:19question number 9

00:02:24question number 9

00:02:38convex lens

00:02:38and the

00:02:39two lens

00:02:40focal length

00:02:4125

00:02:42and the combination

00:02:44we have to put

00:02:45contact

00:02:46so power of combination

00:02:48two lens

00:02:50contact

00:02:51and the convex

00:02:53and the focal length

00:02:55total power

00:02:57or surface

00:02:591-2-3

00:03:01so

00:03:02if I need

00:03:03power lens

00:03:05then

00:03:062-3

00:03:07plus

00:03:082-3 lens

00:03:09okay

00:03:10focal length

00:03:11I will write

00:03:12to myself

00:03:13or focal length

00:03:14I will write

00:03:151 upon

00:03:16f2

00:03:17and I need

00:03:18power

00:03:19so power

00:03:20first

00:03:21power

00:03:25how is it?

00:03:2625

00:03:27the other

00:03:28how is it?

00:03:30how is it?

00:03:31it is

00:03:320

00:03:33how is it?

00:03:34the focal length is how much the focal length will be in finite

00:03:41and something

00:03:44you are thinking about the 7th where is the 7th where is the 7th where is the 7th where is the 7th

00:03:50what is the model in the 7th

00:03:55no that is all about the 7th when we discuss the 7th when we discuss the concept builder

00:03:58concept builder

00:04:00concept builder

00:04:02lp6

00:04:06prince kumar

00:04:08okay

00:04:10we have

00:04:12last class

00:04:14we continue

00:04:16the first question

00:04:18a

00:04:20convex lens

00:04:22a convex lens

00:04:36of power

00:04:38of power

00:04:423 diapter

00:04:44and concave lens

00:04:463 diapter

00:04:48and concave lens

00:04:50of power

00:04:545 diapter

00:04:56convex lens

00:04:58of power 3 diapter

00:05:00and concave lens

00:05:02of power 5 diapter

00:05:04are kept in contact

00:05:06convex

00:05:083 diapter

00:05:10are kept

00:05:12in contact

00:05:14then find out

00:05:16equivalent focal length of combination

00:05:22equivalent focal length of combination

00:05:30equivalent focal length of combination

00:05:34the

00:05:36i

00:05:38the

00:05:40the

00:05:42the

00:05:44the

00:05:46the

00:05:48the

00:05:50the

00:05:52the

00:05:54the

00:05:56to be able to do that.

00:06:03Contact, which we talked yesterday, is only just contact.

00:06:09In the last class, the total power combination,

00:06:15we have already finished three different ways.

00:06:18One, the lens of power, the focal length, and one, the arc.

00:06:24Okay, the arc form doesn't get all the lens.

00:06:26The arc form doesn't get all the lens.

00:06:27It's one surface.

00:06:29So, one lens can do two times work in arc form.

00:06:33So, here, the first lens can do plus the other lens can do.

00:06:37The first lens can do which is convex.

00:06:40So, the plus is 3.

00:06:42In meter, the adapter is per unit meter.

00:06:45So, the other one is concave.

00:06:47Concave power is minus.

00:06:50So, total power.

00:06:51This is how much?

00:06:52Minus two diameter.

00:06:54Of course we can do.

00:06:54From the left to outer here, what not should we be?

00:06:56Air

00:06:57You have to be in half square meter.

00:07:03Minus though,

00:07:03或- .5 meter,

00:07:06或- Mass square place or 56 centimeter?

00:07:09Yeah, these two lines can do less.

00:07:14Is it?

00:07:15Is this lens called looks?

00:07:16No, the lens is hiçbir.

00:07:17In this way, it will be a new lens.

00:07:19A new regel.

00:07:21What about Clown?

00:07:22a concave one after you F negative Anna the nature is being negative even the

00:07:27combination diverging wallabana concave one

00:07:32oh yes a concave and get this key focal length 50 centimeter a you

00:07:38And

00:07:56I

00:07:57time

00:07:58and

00:08:06Hi, I am a guy.

00:08:15Yeah, I am a boss.

00:08:20Yeah, I am a boss.

00:08:23Hey, Tosh.

00:08:28Hey, Josh, whoo bolin, tost bolin?

00:08:33Dost, tost, tost, tost, tost, tost.

00:08:37Next question.

00:08:41I'll take a question.

00:08:43We're going to take a question.

00:08:44We're going to take a question.

00:08:45Next question, a concave lens

00:09:13and convex lens, a concave lens and convex lens of focal length 60 cm and 200 mm are kept

00:09:37in contact, 60 cm and 200 mm are kept in contact.

00:09:44Then find out equivalent focal length of combination.

00:09:51Then find out equivalent focal length of combination.

00:09:58Focal length of combination.

00:10:0530.

00:10:06Like that.

00:10:1230.

00:10:13Like that.

00:10:1920.

00:10:2030.

00:10:2130.

00:10:2220.

00:10:2330.

00:10:2430.

00:10:2530.

00:10:2630.

00:10:2730.

00:10:2830.

00:10:2930.

00:10:3030.

00:10:3130.

00:10:3220.

00:10:3330.

00:10:3430.

00:10:3530.

00:10:3630.

00:10:3730.

00:10:3830.

00:10:3930.

00:10:4030.

00:10:4130.

00:10:4230.

00:10:4431.

00:10:452 lens when it is in contact, the total power will be the first lens of power plus the other lens of power.

00:10:54If something is not going to be said, where will it be? Air.

00:10:58So, where will it be?

00:11:001 by F.

00:11:01If you have the power of power, the last one was given.

00:11:04Here is the focal lens.

00:11:06The first one is focal lens plus the other one is focal lens.

00:11:11Okay, here is the focal lens.

00:11:13What are the left two in the center of power?

00:11:161 by F.

00:11:181 by F.

00:11:192 by F.

00:11:204 by F.

00:11:22T.

00:11:232 by F.

00:11:251 by F.

00:11:262 by F.

00:11:272 by F.

00:11:301 by F.

00:11:321 by F.

00:11:333 by F.

00:11:353 by F.

00:11:373 by F.

00:11:391 by F.

00:11:4160 minus 1 plus 3

00:11:461 upon f equivalent

00:11:47f equivalent की value आजाएगी

00:11:4960 upon 2

00:11:52क्या आया

00:11:53plus में

00:11:55plus में 30

00:11:57ये पूरा कहानी किस की तरह दिखी

00:12:00convex lens की तरह

00:12:02चीजे बन गई

00:12:11क्या आया

00:12:41बढ़े आगे

00:13:03silvering of lens

00:13:05त्यान से सुनियेगा

00:13:07मजदार question है

00:13:08कुछ special चीजे नहीं है

00:13:11कुछ भी special नहीं है

00:13:13बस हम जो पात कर रहे है

00:13:15जो पुराना ग्यान अभी तक

00:13:16gain किया है वो ही लगाने

00:13:19मान लीजिये इसका refractive index

00:13:21mu है

00:13:22मान लीजिये यहाँ पर दोनों side में radius

00:13:25same है तो इसके लिए

00:13:27r की help से क्या f निकाल सकते हो

00:13:29क्या आएगा

00:13:31f की value

00:13:32r by 2 mu minus 1

00:13:35अब इस question के अंदर कहीं पर भी ऐसे बोला जाएगा

00:13:54कि मान लीजिये यहाँ पर हमने

00:13:56एक side में silver यानि की polish कर दिया

00:13:59polish कर दिया यानि कि एक तरह से color किया

00:14:01और color किया है

00:14:03अब मान लो क्या है देखो ध्यान से सुनिएगा

00:14:05कुछ special formula है ही नहीं

00:14:07जो बता रहा हूँ

00:14:09वो ही follow करना है हर बार

00:14:11ऐसे question कि मान लो यहाँ पर object है

00:14:13तो हमने यहाँ पर object बना लिया

00:14:15मानने में क्या जा रहा है

00:14:16yellow object

00:14:16light जो है वो यहाँ से निकलेगी

00:14:19yellow light इधर से गई

00:14:20अब इसको मैं थोड़ा सा टुकड़ों में तोड़ रहा हूँ

00:14:24क्या हो रहा है

00:14:24यह हमारे पास में एक तरह से यह lens था

00:14:27अच्छा यहाँ पर एक कवर कलर लगाया था तो कलर को मैं ऐसे यह से अलग बना दू

00:14:32अब किसी के दिमांग में आ रहा है सरी कलर को आप अलग क्यों बना रहे हूं यह दोनों सर्फिस तो यह की है

00:14:38एक्च्छल में

00:14:39क्या यह जो टिबल पर हम यह दिवार रिफ्लेक्ट कर सकती है

00:14:47करती है है

00:14:49वाइत कलर के पिघ्ण लैक्ट हो एक हुए रहा होगा अचल si दिमांग खरो

00:14:58पिजब्ब्र संसुया काच से नहीं होता है

00:15:02Reflection is on the surface, so if we have silvering or polished color done in this shape, then this is a color, which is also a mirror, which is a layer, which is a layer, which is not a color, but it is a color, but if it is a mirror, it is a surface to become a reflect, even a wooden surface, which is a table, which we are sitting on the surface,

00:15:30then the surface reflects the surface, which is a reflection, and if it is a color, then the layer becomes a layer, which is a mirror, which is not a glass mirror, but if it is a material, it is a mirror, because the mirror is a light, which reflects the surface,

00:15:49so this reflects the colours on the surface where it almost goes, which break will matter now, which is concave, so R which is a colour?

00:15:56minus F, which is a никаких Karin by R as Tom I mean, if it shows all awareness of você from Lightish S attacks,

00:16:00is it there much , when you see aور, which also applies F to either side and sleeping with , FR to life,

00:16:08F, F key value mirror, F key value R by A2. Reflection me, mirror me, F key value R by A2.

00:16:20F, F key value R by A2.

00:16:50F, F key value R by A2 but R by A2.

00:16:53Seết O ń, F key value R by A2 but R.

00:16:57F key value R by A2.

00:17:04the last class to come to see if the light surface for light gets the light go power deliver

00:17:12to it so you can see that light where were going to see the total power deliver

00:17:18is what the first surface is the first time light goes to take a surface then you can

00:17:24put second surface for a second mirror for a second surface for a first surface for

00:17:33I can tell you the first surface for two times.

00:17:35So, first surface for two times power.

00:17:37Second surface for two times power.

00:17:39But in the mirror, this power is totally gone.

00:17:43This power is how can we get out of one surface?

00:17:47Delta mu by r.

00:17:49The other surface is delta mu.

00:17:51Delta mu by r.

00:17:53We have to keep the sine.

00:17:55Cave side is higher, plus.

00:17:57And the minus.

00:17:59If we keep the meter,

00:18:01that from the midnight gate,

00:18:03the process has to keep the power..

00:18:05Mirror.

00:18:07Mirror ki power.

00:18:08Mirror ki power,

00:18:10minus on one by f.

00:18:13The demand we pulse.

00:18:15Together they call up.

00:18:17The new medium light can twice.

00:18:19The second medium lighting can unaware happen after this that,

00:18:21the which is.....

00:18:23ゃ顯示 to be...

00:18:26The momentum, the energy is greater than that.

00:18:28The mighty line will be r至ul-

00:18:30And when we have less mu and less mu, then we have to keep the sign first.

00:18:36So minus 1 by f, f sign, we have to keep the sign.

00:18:41Concave is negative, convex is positive.

00:18:44Do you understand?

00:18:46Over all, if I have silvering, what is the lens?

00:18:52Lens.

00:18:53What is the light?

00:18:57So overall, what is the mirror?

00:19:00Light, if we have to do silvering, we have to put lens on the mirror.

00:19:05So we have to write this to act as a mirror.

00:19:10What question?

00:19:12Question?

00:19:15Equivalent focal length, then I would like to ask this to be a mirror.

00:19:20The mirror?

00:19:23a mirror to mirror clip power or f ka formula minus abhi ef equivalent nikal na priga it is

00:19:30only me yeah it is a looking question says start cut then Pela humare past make lens

00:19:37say this lens car refractive index 1.5 a r key value my John Bush ke likao easy values 20

00:19:43centimeter 20 centimeter bar air sable and say any lens head to scale a bhi philhaal

00:19:52F can be taken as a r by 2 mu minus 1.

00:19:58A.5.

00:20:012.5.

00:20:031.

00:20:04R.

00:20:05F.

00:20:07F.

00:20:08F.

00:20:09F.

00:20:10F.

00:20:11F.

00:20:12F.

00:20:13F.

00:20:14F.

00:20:15F.

00:20:16F.

00:20:17F.

00:20:18F.

00:20:19F.

00:20:20F.

00:20:21F.

00:20:22F.

00:20:23F.

00:20:24F.

00:20:50F.

00:20:51F.

00:20:52F.

00:20:52So this is a surface, one surface is one, one surface is one, the first surface is the mirror.

00:20:59This is the mirror, light is here, then the mirror goes, then the mirror goes, then the mirror goes, then the mirror goes.

00:21:05So the total power goes, how many times the surface will go?

00:21:11Two times, two times, second time, one time the mirror goes.

00:21:17Here we go.

00:21:28Okay, power, this is one surface or two, this is one surface, power, this is two multiply, delta mu by r, delta mu

00:21:39निकालना भाई, 1.5 और 1, कितना, 0.5 अपोन में r, यह हो गया, प्लस आएगा, cave side पे 1.5 है, दूसरे के लिए कारिक्रम चलाएं, 2 into, इन दोनों पर 0.5 अपोन में r, r की value पोन यह भी हो गया, यार यह तो mirror है, minus में 1 by f, लेकिन आप यहाँ पर plus और minus तो हम खुद रखते थे,

00:22:09यहाँ पर delta mute थोड़ी ना आता है, यह तो mirror है, तो यहाँ पर तो हमें already हर चीज with sign रखना पड़ेगा, हमने mirror में काम किया था यह, तो यह minus में, यह तो minus तो, formula का, 1 by f, f कैसे निकाल लोगा, इसका r कितना है, minus 20, minus 20 क्यों,

00:22:30कौन केव, तो यह minus 20 का आधा क्या होगा, minus 10, कर बढ़ कुछ की हो, तो बता दो,

00:22:39meter meter centimeter

00:22:45oh yeah yeah after when jade after when jade to school with another one after the meter

00:22:52mail low yes of course and river material like the key for further children wait

00:22:56yeah punch upon me though punch punch upon my dog punch minus minus plus

00:23:03this so here I get this total get a piece to minus May one upon me F equivalent to F equivalent

00:23:12key value get a minus May one upon me 20 meter yeah so upon my patch minus

00:23:19by like it and I write a piece minus punch but as I tell minus my focal length I am mirror to

00:23:28ban yeah consa mirror when a year or interesting question will get a second for a conquee when

00:23:35you are a question me I'm gonna get a gunner or a harrick surface power delivery party a

00:23:39harrick surface for power detail detail or end my finally silvering a current one make a

00:23:44waller mirror net power for minus one by F and I have to make a simple as I talk to

00:23:50another some me again I was special party me ready to purchase a picture of each other

00:23:53little bus variety a change of the journey we can

00:24:01you

00:24:05you

00:24:10you

01:04:43You.

01:05:13You.

01:12:43You.

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