NEET MCQs with answers Page - 20

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Q. The angular momentum of a body is conserved when:

  • (A) Net force is zero
  • (B) Net torque is zero
  • (C) Velocity is constant
  • (D) Acceleration is zero

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Q. A body of mass 5 kg is lifted to a height of 10 m. The potential energy gained is (g = 10 m/s²):

  • (A) 50 J
  • (B) 100 J
  • (C) 500 J
  • (D) 1000 J

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Q. The number of significant figures in 0.004560 is:

  • (A) 3
  • (B) 4
  • (C) 5
  • (D) 6

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Q. The escape velocity on Earth is approximately:

  • (A) 5.6 km/s
  • (B) 7.9 km/s
  • (C) 11.2 km/s
  • (D) 16.8 km/s

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Q. The dimensional formula of impulse is:

  • (A) [MLT⁻²]
  • (B) [MLT⁻¹]
  • (C) [ML²T⁻²]
  • (D) [ML²T⁻¹]

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Q. In Young's double slit experiment, the fringe width increases when:

  • (A) Wavelength decreases
  • (B) Distance between slits increases
  • (C) Distance between screen and slits increases
  • (D) Both wavelength and screen distance decrease

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Q. The unit of electric flux is:

  • (A) N/C
  • (B) Nm²/C
  • (C) C/N
  • (D) Volt

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Q. A satellite revolves around Earth in a circular orbit. Its acceleration is:

  • (A) Zero
  • (B) Tangential
  • (C) Centripetal towards Earth
  • (D) Away from Earth

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Q. The work done by centripetal force in uniform circular motion is:

  • (A) Positive
  • (B) Negative
  • (C) Zero
  • (D) Infinite

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Q. The ratio of specific heats Cp/Cv is called:

  • (A) Coefficient of expansion
  • (B) Adiabatic constant
  • (C) Thermal conductivity
  • (D) Compressibility

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