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The momentum of a photon of energy 1 MeV in kg m/s will be
Options
(a) 5 x 10⁻²²
(b) 0.33 x 10⁶
(c) 7 x10⁻²⁴
(d) 10⁻²²
Correct Answer:
5 x 10⁻²²
Explanation:
Energy of photon E = 1 MeV
Momentum of photon p = E / c
p = E / c = (1 × 10⁶ × 1.6 × 10⁻¹⁹J) / 3 × 10⁸ ms⁻¹
= 0.53 × 10⁻²¹ = 5 × 10⁻²² kg m/s.
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Subject: Physics
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Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A person holding a rifle (mass of person and rifle together is 100 kg) stands on a smooth
- In the reaction ₉₂U²³⁴→₈₇Y²²², how many α-particle and β-particles are emitted
- A rocket with a lift-off mass 3.5 x 10⁴ kg is blasted upwards with an initial acceleration
- An atom bomb works on the principle of
- A nucleus disintegrates into two nuclear parts which have their velocities in the ratio
Topics: Dual Nature of Matter and Radiation (150)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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