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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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Topics: Dual Nature of Matter and Radiation
(150)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A 50Hz AC signal is applied in a circuit of inductance of (1/π)H and resistance 2100Ω
- A body of mass 2 kg is moved by a force F=3x where x is the distance covered.
- The time period of a thin bar magnet in Earth’s magnetic field is T
- The velocity of electromagnetic radiation in a medium of permittivity ε₀
- A body of mass M hits normally a rigid wall with velocity V and bounces back
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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