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  • The value pf planck's constant is . The velocity of light is <img alt="3.0 \times 10^{8}ms^{-1}" src="

The value pf planck's constant is 6.63 \times 10^{-34}Js. The velocity of light is 3.0 \times 10^{8}ms^{-1}. Which value is closest to the wavelength in nanometers of a quantum of light with frequency of 8 \times 10^{15}s^{-1}

Option: 1

3 \times 10^{7}


Option: 2

2 \times 10^{-25}


Option: 3

5 \times 10^{-18}


Option: 4

37.5


Answers (1)

best_answer

We know that,

\nu = \frac{c}{\lambda}

\Rightarrow \lambda = \frac{c}{\nu}

\Rightarrow \lambda = \frac{c}{\nu}= \frac{3 \times 10^8}{8 \times 10^{15}}= 3.75 \times 10^{-8} m

Posted by

Riya

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