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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.
Related Questions: - One mole of an ideal gas at an initial temperature of T K, does 6R joule of work
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Topics: Dual Nature of Matter and Radiation
(150)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- One mole of an ideal gas at an initial temperature of T K, does 6R joule of work
- A radiotransmitter radiates 1 kW power at a wavelength 198.6 m. How many photons
- When a metallic surface is illuminated with radiation of wavelength λ,
- A proton and helium nucleus are shot into a magnetic field at right angles to the field
- Two sources of sound placed close to each other are emitting progressive waves
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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