Question

The momentum of a photon of an electromagnetic radiation
is 3.3 × 10⁻²⁹ kgms⁻¹. What is the frequency of the associated
waves ?
[h = 6.6 × 10⁻³⁴ Js; c = 3 × 10⁸ ms⁻¹)
(a) 1.5 × 10¹³ Hz (b) 7.5 × 10¹² Hz
(c) 6.0 × 10³ Hz (d) 3.0 × 10³ Hz

Answer 1

uwuwuuw828282wiiwiHard X-rays for the study of fractures in bones should have

a minimum wavelength of 10⁻¹¹ m. The accelerating voltage

for electrons in X-ray machine should be

(a) < 124 kV

(b) > 124 kV

(c) between 60 kV and 70 kV

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