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MDCAT Question Bank

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1009 available questions

Physics · Question 861

Waves that do not require a material medium for propagation are:

  1. Electromagnetic waves
  2. Non-mechanical waves
  3. Mechanical waves
  4. Both A and B
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Correct answer: D

Both A and B

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

Physics · Question 862

Mechanical waves can be:

  1. Longitudinal only
  2. Transverse only
  3. Both longitudinal and transverse
  4. None of these
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Correct answer: C

Both longitudinal and transverse

The printed worksheet key marks C (Both longitudinal and transverse) as the correct answer.

Physics · Question 863

When a longitudinal wave reflects from a denser boundary:

  1. Compression becomes rarefaction
  2. Rarefaction becomes compression
  3. Both A and B
  4. No phase change occurs
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Correct answer: D

No phase change occurs

The printed worksheet key marks D (No phase change occurs) as the correct answer.

Physics · Question 864

Stationary waves can be produced in:

  1. A stretched string
  2. An air column
  3. Both A and B
  4. None of these
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Correct answer: C

Both A and B

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

Physics · Question 865

What is the minimum length of an open pipe resonating at 350 Hz when sound speed is 350 m/s?

  1. 0.25 m
  2. 1 m
  3. 0.5 m
  4. 2 m
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Correct answer: C

0.5 m

The printed worksheet key marks C (0.5 m) as the correct answer.

Physics · Question 866

Longitudinal waves do not exhibit:

  1. Reflection
  2. Refraction
  3. Diffraction
  4. Polarization
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Correct answer: D

Polarization

The printed worksheet key marks D (Polarization) as the correct answer.

Physics · Question 867

The centre of Newton's rings in case of transmitted light is:

  1. Bright
  2. Dark
  3. May be bright or dark
  4. None of these
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Correct answer: A

Bright

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

Physics · Question 868

Two coherent sources produce a dark fringe when their phase difference is:

  1. 2nπ
  2. nπ
  3. 2π
  4. (2n − 1)π
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Correct answer: D

(2n − 1)π

The printed worksheet key marks D ((2n − 1)π) as the correct answer.

Physics · Question 869

In Young's double slit experiment the distance between the slits is gradually increased. The width of the fringes:

  1. Increases
  2. Remains same
  3. Decreases
  4. First increases and then decreases
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Correct answer: C

Decreases

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

Physics · Question 870

The image of the tip of a needle is never sharp because of:

  1. Polarization of light
  2. Interference of light
  3. Diffraction of light
  4. Reflection of light
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Correct answer: C

Diffraction of light

The printed worksheet key marks C (Diffraction of light) as the correct answer.