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Question: What will be the energy of a photon which corresponds to the wavelength of \(0.50\overset{o}{A}\)?...

What will be the energy of a photon which corresponds to the wavelength of 0.50Ao0.50\overset{o}{A}?

A

3.98×10−15J3.98 \times 10^{- 15}J

B

3×1015J3 \times 10^{15}J

C

3.9×108J3.9 \times 10^{8}J

D

3×10−34J3 \times 10^{- 34}J

Answer

3.98×10−15J3.98 \times 10^{- 15}J

Explanation

Solution

: E=hυ=hcλE = h\upsilon = \frac{hc}{\lambda}

=(6.626×10−34Js)(3×108ms−1)0.5×10−10m= \frac{(6.626 \times 10^{- 34}Js)(3 \times 10^{8}ms^{- 1})}{0.5 \times 10^{- 10}m}

=3.98×10−15J= 3.98 \times 10^{- 15}J