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Calculate the energy in joule correspond...

Calculate the energy in joule corresponding to light of wavelength `45 nm` :
(Planck' constant `h = 6.63 xx 10^-34 Js` , speed of light `c = 3 xx 10^8 ms^-1`)

A

`6.67 xx 10^15`

B

`6.67 xx 10^11`

C

`4.42 xx 10^-15`

D

`4.42 xx 10^-18`

Text Solution

Verified by Experts

The correct Answer is:
D
(d) `(hc)/(lamda) = (6.63 xx 10^-34 xx 3 xx 10^8)/(45 xx 10^-9)`
=`4.42 xx 10^-18 J`.
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