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A machine gun fires 10 bullets/s, each of mass 10g, the speed of each bullet is 20 cms⁻¹, then force of recoil is
Options
(a) 200 dyne
(b) 2000 dyne
(c) 20 dyne
(d) None of these
Correct Answer:
2000 dyne
Explanation:
Time taken for 1 bullet = 1/n
Force = the rate of change of momentum = mvn
= 10 x 20 x 10 = 2000 dyne
Related Questions: - Two particles of masses m₁ m₂ move with initial velocities u₁ and u₂
- A polarised light of intensity I₀ is passed through another polariser whose pass axis
- The current in a conductor varies with time t as I=2t+3t² Where I is in amperes
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Question Type: Memory
(964)
Difficulty Level: Easy
(1008)
Topics: Laws of Motion
(103)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Two particles of masses m₁ m₂ move with initial velocities u₁ and u₂
- A polarised light of intensity I₀ is passed through another polariser whose pass axis
- The current in a conductor varies with time t as I=2t+3t² Where I is in amperes
- There is a ring of radius r having linear charge densityλ and rotating with a uniform
- Nuclear fission is not found in
Question Type: Memory (964)
Difficulty Level: Easy (1008)
Topics: Laws of Motion (103)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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