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Question

Question: Frequency of photon having energy 66 eV is....

Frequency of photon having energy 66 eV is.

A

8×10−15Hz8 \times 10^{- 15}Hz

B

12×10−15Hz12 \times 10^{- 15}Hz

C

16×1015Hz16 \times 10^{15}Hz

D

None of these

Answer

16×1015Hz16 \times 10^{15}Hz

Explanation

Solution

E=hν⇒ν=Eh=66×1.6×10−196.6×10−34=16×1015HzE = h\nu \Rightarrow \nu = \frac{E}{h} = \frac{66 \times 1.6 \times 10^{- 19}}{6.6 \times 10^{- 34}} = 16 \times 10^{15}Hz