Physics Practice Question and Answer
8 4 Q:
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63c7baad1c47ef334bdd8984 Answer : 1. "They cannot transmit data at long distances due to curvature of the earth"
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Q: The light is a:
1129 061655a273d260361529b02a7
61655a273d260361529b02a7- 1Transverse wavetrue
- 2Longitudinal wavefalse
- 3Bothfalse
- 4Nonefalse
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Answer : 1. "Transverse wave "
Q: Which of the following elements has lowest melting point?
1129 162f32fca39a8157d97fb6e35
62f32fca39a8157d97fb6e35- 1Titaniumtrue
- 2Sulphurfalse
- 3Argonfalse
- 4Zincfalse
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Answer : 1. "Titanium"
Q: When ray of light goes from denser to rarer medium then it –
1123 06062c4df9cf7d827dcdcfcd2
6062c4df9cf7d827dcdcfcd2- 1Bends towards the normalfalse
- 2Bends away from the normaltrue
- 3Goes Straightfalse
- 4Reflected backfalse
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Answer : 2. "Bends away from the normal "
Q: What is the direction of torque?
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62ce884231b6d20155334fe4- 1Opposite to the direction of applied forcefalse
- 2Parallel to the radiusfalse
- 3Perpendicular to the direction of applied forcetrue
- 4Same as the direction of applied forcefalse
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Answer : 3. "Perpendicular to the direction of applied force"
Q: Most waves used for communication purposes rely on geostationary satellites because _____
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63c7baad1c47ef334bdd8984- 1They cannot transmit data at long distances due to curvature of the earthtrue
- 2They are reflected by the atmospherefalse
- 3They are very cheapfalse
- 4It does not occupy space on the earth’s surfacefalse
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Answer : 1. "They cannot transmit data at long distances due to curvature of the earth"
Explanation :
Explanation: Most communication waves cannot transmit data accurately over long distances due to the curvature of the earth. They can only do so in the line of sight. However, they are not reflected by the ionosphere like radio waves and can be relayed to a wide area using geostationary satellites.
Q: The device for generating current is called?
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5fe41bea438750744e325552- 1ammeterfalse
- 2Galvanometerfalse
- 3generatortrue
- 4meterfalse
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Answer : 3. "generator"
Q: What is the kilowatt hour unit?
1116 05fe46a8500c5087b4d137b22
5fe46a8500c5087b4d137b22- 1charge powerfalse
- 2Energytrue
- 3Potential powerfalse
- 4powerfalse
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Answer : 2. "Energy"
Q: Which of the following laws is associated with the heating effect of electric current?
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6082792060a06a7ffdaa9927- 1Joule's lawtrue
- 2Ohm's lawfalse
- 3Faraday's lawfalse
- 4Newton's lawfalse
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Answer : 1. "Joule's law "
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