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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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Question Type: Memory
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Difficulty Level: Easy
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Topics: Physical World and Measurement
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Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Three objects coloured black, gray and white can withstand hostile conditions upto 2800⁰C.
- The value of coefficient of volume expansion of glycerin is 5 x 10⁻⁴ k⁻¹.
- An α-particle and a proton are accelerated through same potential difference
- A metal bar of length L and area of cross-section A is clamped between two rigid
- When the disc rotates with uniform angulr velocity.Which of the following is not true?
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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