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Two springs with spring constants K₁=1500 N/m and K₂=3000 N/m are stretched by the same force. The ratio of potential energy stored in springs will be
Options
(a) 1:2
(b) 2:1
(c) 4:1
(d) 1:4
Correct Answer:
2:1
Explanation:
Force F=-Kxdisplacement (x),
Potential Energy = U =(1/2) Kx²
U = (1/2) K(F/K)² = (1/2)(F²/K)
U₁/U₂=(1/2)(F²/K₁)x(2K₂/F²)
K₂/K₁=3000/1500=2/1.
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Topics: Laws of Motion
(103)
Subject: Physics
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Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- In common base circuit of a transistor, current amplification factor is 0.95.
- In Wheatstone bridge, three resistors P,Q and R are conncected in three arms
- An ideal gas is compressed to half its initial volume by means of several processes.
- The de-Broglie wavelength of an electron moving with a velocity 1.5×10⁸ ms⁻¹ is equal
- The momentum of a body is increased by 20%.The percentage increases in kinetic energy
Topics: Laws of Motion (103)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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