00:05Question says, if wavelength of a wave is lambda is equal to 6000 angstrom, then wave
00:14number will be a, 166 into 10 raised power 3 per meter, b, 16.6 into 10 raised power minus
00:261 per meter, c, 1.66 into 10 raised power 6 per meter, d, 1.66 into 10 raised power
00:357 per meter.
00:38Is, to find the wave number, we will use formula, wave number is equal to the reciprocal of wavelength, as
00:52we know that, wavelength is obtained as 6000 angstrom is,
01:021 angstrom is equal to 10 raised power minus 10 meter, so wavelength will be 6000 into 10 raised power
01:13minus 10 meters,
01:18so wavelength will be equal to, we can also write 6000 is, 6 into 10 raised power 3 into 10
01:26raised power minus 10 meter,
01:28as in multiplication, when bases are same, then we will add the powers, so wavelength will become as, 6 into
01:3710 raised power 3 minus 10 meter,
01:41so wavelength will be equal to, 6 into, plus 3 minus 10, so it will be minus 7 meter.
01:51Now finally, we will find wave number, which is equal to, 1 upon lambda, so 1 upon lambda, the value
02:03of wavelength is, 6 into 10 raised power minus 7,
02:10is wave number will be equal to, 1 divided by 6, it will be, 0.166, here 10 raised power
02:24minus 7 is in denominator,
02:26when we will take this numerator, then it will be, 10 raised power plus 7 per meter, so when we
02:40will take decimal up to,
02:441 digit from left to right, then we will subtract 1 from the power, so wave number will be obtained
02:53as,
02:541.66 into 10 raised power, 6 per meter, so the correct option will be, C, 1.66 into 10
03:09raised power, 6 per meter,
03:1210 raised power, 5 as, 5 half times when we will take this switch, where the power's,
03:126 to 80 centimeters, 5 to the menu, especially in the middle, depending on the cherry Everyday見て,
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