Imp mcqs phy 1st year


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Imp mcqs phy 1st year
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Sure! Here are some multiple-choice questions in physics for the first year:

  1. Which of the following statements about vectors is correct? a) Vectors have only magnitude. b) Vectors have only direction. c) Vectors have both magnitude and direction. d) Vectors have neither magnitude nor direction.

  2. Which of the following is an example of a scalar quantity? a) Velocity b) Force c) Mass d) Acceleration

  3. The displacement-time graph of an object moving with uniform velocity is: a) A straight line with positive slope. b) A straight line with negative slope. c) A curved line. d) A horizontal line.

  4. Which of the following is a non-conservative force? a) Gravity b) Friction c) Spring force d) Electric force

  5. Which of the following equations represents Newton's second law of motion? a) F = ma b) F = mg c) F = mv d) F = ms

  6. The SI unit of power is: a) Watt b) Joule c) Newton d) Volt

  7. The rate of change of momentum of an object is equal to the: a) Force acting on the object. b) Acceleration of the object. c) Mass of the object. d) Velocity of the object.

  8. Which of the following statements about work and energy is true? a) Work and energy are always equal. b) Work and energy are different forms of the same physical quantity. c) Work is a scalar quantity, and energy is a vector quantity. d) Work is a vector quantity, and energy is a scalar quantity.

  9. When a light ray passes from air to glass, it bends towards the normal. This phenomenon is known as: a) Reflection b) Refraction c) Diffraction d) Dispersion

  10. The phenomenon of splitting white light into its constituent colors is called: a) Diffraction b) Dispersion c) Reflection d) Refraction

Answers:

  1. c) Vectors have both magnitude and direction.
  2. c) Mass
  3. d) A horizontal line.
  4. b) Friction
  5. a) F = ma
  6. a) Watt
  7. a) Force acting on the object.
  8. b) Work and energy are different forms of the same physical quantity.
  9. b) Refraction
  10. b) Dispersion

Please note that these questions are for practice purposes, and the answers provided are based on general knowledge in physics.

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