Practice MCQ Questions and answers on Physics-GK Page-8 section-12

Section 1 Section 2 Section 3 Section 4 Section 5 Section 6 Section 7 Section 8 Section 9 Section 10 Section 11 Section 12 Section 13 Section 14 Section 15

71.
The sharpness of a television image is termed as its

A. Clarity

B. Colour

C. Resolution

D. Graphics

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72.
Which of the following is the fastest communication channel?

A. Microwave

B. Optical fiber

C. Radio wave

D. All are operating at nearly the same propagation speed

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73.
The layer of atmosphere used for radio-wave transmission is

A. Chromosphere

B. Troposphere

C. Ionosphere

D. Stratosphere

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74.
What frequency range is the high frequency band?

A. 3 kHz

B. 3 to 30 MHz

C. 30 to 300 MHz

D. 10 GHz

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75.
In an optical fibre the signal is transmitted

A. In a straight line path

B. In a curved path

C. Due to total internal reflection

D. Due to refraction

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76.
The Capacity of a communication channel is measured in

A. Band rate

B. Band width

C. Data flow

D. Bit capacity

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77.
The frequency used in TV and radar system lies in

A. VHF

B. HF

C. SHF

D. UHF

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78.
Which among the following waves is used for communication by artificial satellites ?

A. Micro waves

B. Radio waves

C. A. M.

D. Frequency of 1016 series

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79.
Modem is used mostly for ?

A. A modern empty memory modules

B. Connecting to internet

C. Mostly for file system

D. All the above

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80.
Choose the most appropriate answer: In which atmospheric layer are the communication satellites located?

A. Stratosphere

B. Ionosphere

C. Troposphere

D. Mesosphere

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Practice MCQ Questions and answers on Physics-GK

71. The sharpness of a television image is termed as its

Answer & Solution

72. Which of the following is the fastest communication channel?

Answer & Solution

73. The layer of atmosphere used for radio-wave transmission is

Answer & Solution

74. What frequency range is the high frequency band?

Answer & Solution

75. In an optical fibre the signal is transmitted

Answer & Solution

76. The Capacity of a communication channel is measured in

Answer & Solution

77. The frequency used in TV and radar system lies in

Answer & Solution

78. Which among the following waves is used for communication by artificial satellites ?

Answer & Solution

79. Modem is used mostly for ?

Answer & Solution

80. Choose the most appropriate answer: In which atmospheric layer are the communication satellites located?

Answer & Solution

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71.
The sharpness of a television image is termed as its

72.
Which of the following is the fastest communication channel?

73.
The layer of atmosphere used for radio-wave transmission is

74.
What frequency range is the high frequency band?

75.
In an optical fibre the signal is transmitted

76.
The Capacity of a communication channel is measured in

77.
The frequency used in TV and radar system lies in

78.
Which among the following waves is used for communication by artificial satellites ?

79.
Modem is used mostly for ?

80.
Choose the most appropriate answer: In which atmospheric layer are the communication satellites located?