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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: - A circular disc of radius R is removed from a bigger circular disc of radius 2R
- A person cannot see the objects clearly placed at a distance more than 40 cm
- A body of mass 1.0 kg is falling with an acceleration of 10 ms⁻².
- In common base mode of a transistor, the collector current is 5.488 mA
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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
- A circular disc of radius R is removed from a bigger circular disc of radius 2R
- A person cannot see the objects clearly placed at a distance more than 40 cm
- A body of mass 1.0 kg is falling with an acceleration of 10 ms⁻².
- In common base mode of a transistor, the collector current is 5.488 mA
- Two masses of 9 g and 6 g are connected with a string which is passing over a frictionless
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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