| ⇦ | 
| ⇨ |
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 rocket with a lift-off mass 3.5 x 10⁴ kg is blasted upwards with an initial acceleration
- An experiment takes 10 minutes to raise temperature of water from 0⁰C to 100⁰C
- A particle of unit mass undergoes one-dimensional motion such that its velocity varies
- A bar magnet has a coercivity of 4×10³ Am⁻¹. It is placed inside a solenoid
- Two bodies of masses m and 4 m are moving with equal K.E. The ratio of their linear
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 rocket with a lift-off mass 3.5 x 10⁴ kg is blasted upwards with an initial acceleration
- An experiment takes 10 minutes to raise temperature of water from 0⁰C to 100⁰C
- A particle of unit mass undergoes one-dimensional motion such that its velocity varies
- A bar magnet has a coercivity of 4×10³ Am⁻¹. It is placed inside a solenoid
- Two bodies of masses m and 4 m are moving with equal K.E. The ratio of their linear
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
18000+ students are using NEETLab to improve their score. What about you?
Solve Previous Year MCQs, Mock Tests, Topicwise Practice Tests, Identify Weak Topics, Formula Flash cards and much more is available in NEETLab Android App to improve your NEET score.
Share this page with your friends
Leave a Reply