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Dual Nature of Radiation and Matter

  1. The momentum of a photon of an electromagnetic radiation is 3.3 × 10–29​ kg ms–1. What is the frequency of the associated waves ?
    ​[h = 6.6 × 10–34 Js; c = 3 × 108 ms–1)
    1. 1.5 × 1013 Hz ​
    2. 7.5 × 1012 Hz
    3. 6.0 × 103 Hz ​
    4. 3.0 × 103 Hz
Correct Option: A

As λ =
h
and λ =
c
;
Pv

so v =
c
=
cP
λh

3 × 108 × =
3.3 × 10-29
6.6 × 10-34

= 1.5 × 1013 Hz



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