31000+ Important MCQs for CDS

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Learn CDS MCQs with answers [Page 8 of Department 111]

D

Dhruva • 4.38K Points
Extraordinary Physics

71) Consider the following advantages of the Optic Fibers and the Copper wires:
1. Optic Fibers are NOT susceptible to the electrical interference
2. Optic Fibers can be used to transmit more signals that Copper Wires
3. Optic Fibers can carry a signal over a single fiber, unlike the electricity which requires a pair of Copper wires.
Which among the above stand correct ?

  • (A) Only 1 is correct
  • (B) Only 1 & 2 are correct
  • (C) All 1, 2 & 3 are correct
  • (D) Only 3 is correct
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Correct Answer - Option (C)

No Explanation found. Add Explanation and get +2 points.

D

Dhruva • 4.38K Points
Extraordinary Physics

72) The power we use at Home has a frequency of 60Hz. What would be the period of the sine wave?

  • (A) 0.116 seconds
  • (B) 0.0116 seconds
  • (C) 0.00116 secon
  • (D) 0.0016 Microseconds
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Correct Answer - Option (B)

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D

Dhruva • 4.38K Points
Extraordinary Physics

73) What do we call the part of the ―DTH Satellite dish‖ that converts the signals from electromagnetic or radio waves to electrical signals ?

  • (A) Orthomode transducer (OMT)
  • (B) Low-noise block converter (LNB)
  • (C) Block upconverter (BUC)
  • (D) Parabolic Dish
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Correct Answer - Option (B)

No Explanation found. Add Explanation and get +2 points.

D

Dhruva • 4.38K Points
Extraordinary Physics

74) Which among the following waves are used in the gemstone industry to change white topazinto blue topaz?

  • (A) X-Rays
  • (B) Gamma Rays
  • (C) Alpha Radiation
  • (D) Beta Radiation
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Correct Answer - Option (B)

No Explanation found. Add Explanation and get +2 points.

D

Dhruva • 4.38K Points
Extraordinary Physics

75) Which among the following waves are most commonly used in the Night Vision Devices?

  • (A) Microwaves
  • (B) Infra Red Waves
  • (C) Ultra Violet Waves
  • (D) Radio Waves
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Correct Answer - Option (B)

No Explanation found. Add Explanation and get +2 points.

D

Dhruva • 4.38K Points
Extraordinary Physics

76) Which among the following strictly works on the principle of dipole movement of the water molecules?

  • (A) Refrigerator
  • (B) Microwave Oven
  • (C) Air Conditioner
  • (D) Electric Geyser
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Correct Answer - Option (B)

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D

Dhruva • 4.38K Points
Extraordinary Physics

77) Which among the following is the most common cause of Sunburn?

  • (A) Ultraviolet Radiation
  • (B) Visible Radiation
  • (C) Infrared Radiation
  • (D) Microwave Radiation
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Correct Answer - Option (A)

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D

Dhruva • 4.38K Points
Extraordinary Physics

79) A vehicle moving on a circular path experiences ________?

  • (A) centripetal force
  • (B) centrifugal force
  • (C) gravitational force
  • (D) None of the above
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Correct Answer - Option (A)

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D

Dhruva • 4.38K Points
Extraordinary Physics

80) Which among the following are used in Computed tomography (CT) Scan?

  • (A) X-Rays
  • (B) Ultrasound
  • (C) Infrared waves
  • (D) Radio Waves
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Correct Answer - Option (A)

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