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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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- A coil of 100 turns carries a current of 5 mA and creates a magnetic flux of 10⁻⁵ Wb.
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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
- If sound wave travel from air to water, which of the following remains unchanged?
- A coil of 100 turns carries a current of 5 mA and creates a magnetic flux of 10⁻⁵ Wb.
- A solid cylinder of mass 50kg and radius 0.5 m is, free to rotate about the horizontal axis
- Two small spherical shells A and B are given positive charges of 9C and 4C
- Bragg’s law for X-rays is
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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