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MDCAT Question Bank

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1009 available questions

Physics · Question 851

At what angle between force and displacement is positive work maximum?

  1. 0°
  2. 180°
  3. Both 0° and 180°
  4. None of these
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Correct answer: A

0°

The printed worksheet key marks A (0°) as the correct answer.

Physics · Question 852

When gravity does negative work on a body, its gravitational potential energy:

  1. May increase
  2. May decrease
  3. Must increase
  4. Must decrease
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Correct answer: C

Must increase

The printed worksheet key marks C (Must increase) as the correct answer.

Physics · Question 853

A 2 N force acts through 1 m. What is the maximum possible work?

  1. 2 units
  2. 3 units
  3. 5 units
  4. 6 units
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Correct answer: A

2 units

The printed worksheet key marks A (2 units) as the correct answer.

Physics · Question 854

A body falls from rest through 5 m without friction. What is its speed just before impact if g = 10 m/s²?

  1. 5 m/s
  2. 10 m/s
  3. 15 m/s
  4. 20 m/s
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Correct answer: B

10 m/s

The printed worksheet key marks B (10 m/s) as the correct answer.

Physics · Question 855

The angular-displacement vector is directed:

  1. Along axis of rotation
  2. In the plane of rotation
  3. Perpendicular to plane of rotation
  4. Both A and C
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Correct answer: D

Both A and C

The printed worksheet key marks D (Both A and C) as the correct answer.

Physics · Question 856

If circular-motion radius is doubled while angular velocity stays constant, the centripetal force becomes:

  1. Double
  2. Remains same
  3. Half
  4. Reduces by four times
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Correct answer: A

Double

The printed worksheet key marks A (Double) as the correct answer.

Physics · Question 857

The unit and dimensions of spring constant are the same as those of:

  1. Pressure
  2. Tension
  3. Surface tension
  4. Energy
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Correct answer: C

Surface tension

The printed worksheet key marks C (Surface tension) as the correct answer.

Physics · Question 858

Two spring constants add directly to give the maximum equivalent constant when the springs are connected in:

  1. Series
  2. Parallel
  3. Perpendicular
  4. None of these
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Correct answer: B

Parallel

The printed worksheet key marks B (Parallel) as the correct answer.

Physics · Question 859

A simple pendulum has frequency of 2 Hz. How long does it take to move from mean to extreme position:

  1. 0.125 s
  2. 0.2 s
  3. 0.5 s
  4. 0.05 s
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Correct answer: A

0.125 s

The printed worksheet key marks A (0.125 s) as the correct answer.

Physics · Question 860

Waves that require a material medium for propagation are called:

  1. Electromagnetic waves
  2. Mechanical waves
  3. Non-mechanical waves
  4. Matter waves
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Correct answer: B

Mechanical waves

The printed worksheet key marks B (Mechanical waves) as the correct answer.