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The value of Planck's constant is 6.63xx...

The value of Planck's constant is `6.63xx10^(-34)`Js. The speed of light is `3xx10^(17) nm s^(-1)`. Which value is closest to the wavelength in nanometer of a quantum of light with frequency of of `6xx10^(15) s^(-1)`?

A

10

B

25

C

50

D

75

Text Solution

Verified by Experts

The correct Answer is:
C
`v = c//lambda` or `lambda =(c )/(v) =(3 xx 10^(17) n ms^(-1))/(6 xx 10^(15) s^(-1)) = 50 nm`.
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