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MDCAT Question Bank

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1009 available questions

Physics · Question 541

He-Ne laser light has wavelength of.

  1. RED
  2. YELLOW
  3. BLUE
  4. ORANGE
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Correct answer: A

RED

Physics · Question 542

Internal resistance of a battery is ____________ ohm, if , E=10V, Vt=9V, I=1A

  1. 1
  2. 0.1
  3. 0.01
  4. None of these
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Correct answer: A

1

Physics · Question 543

In which rectifier ripple factor is less

  1. full wave
  2. half wave
  3. Both A and B
  4. none of them
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Correct answer: A

full wave

Physics · Question 544

Three types of radioactive elements are emitted when unstable nuclei undergo radioactive decay. Which of the following is not one of them?

  1. alpha
  2. beta
  3. gamma
  4. delta
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Correct answer: D

delta

Physics · Question 545

Coulomb force is a

  1. Short range force
  2. Long range force
  3. Medium range force
  4. None of these
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Correct answer: B

Long range force

Physics · Question 546

Which metal is used to detect radioactivity?

  1. Heavy metal
  2. Mercury metal
  3. Hydrogen gas
  4. None of these
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Correct answer: A

Heavy metal

Physics · Question 547

Which photon is travelling with largest speed in vacuum?

  1. Gamma photon
  2. Visible light photon
  3. Infrared
  4. All photons move with the speed of light.
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Correct answer: D

All photons move with the speed of light.

Physics · Question 548

Setp up transformer have _______________ turns in secondary coil

  1. more
  2. less
  3. equal
  4. zero
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Correct answer: A

more

Physics · Question 549

Core of transformer is made up of:

  1. copper
  2. Aluminum
  3. iron
  4. steel
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Correct answer: C

iron

Physics · Question 550

In electron microscope image formed is

  1. 2D
  2. 3D
  3. 1D
  4. Any of these
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Correct answer: B

3D