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If the error in the measurement of momentum of particle is (+100 % ), then the error in the measurement of kinetic energy is
Options
(a) 100 %
(b) 200 %
(c) 300 %
(d) 400 %
Correct Answer:
300 %
Explanation:
Error in measurement of momentum is + 100%
.·. p₁ = p, p₂ = 2p
KE₁ = p²/2m, KE₂ = (2p)²/2m
% in KE = [(KE₂ – KE₁) / KE₁] × 100 = [(4-1) / 1] × 100 = 300 %.
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Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- To obtain a p-type semiconductor, germanium must be doped with
- A scooter is going round a circular road of radius 100 m at a speed of 10m/s
- A body is thrown vertically upward in air when air resistance is taken into account
- A thermocouple of negligible resistance produces an e.m.f. of 40 µV/⁰C in the linear range
- Two particles A and B, move with constant velocities V₁ and V₂. At the initial
Question Type: Memory (964)
Difficulty Level: Easy (1008)
Topics: Physical World and Measurement (103)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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