Physics Practice Question and Answer
8 Q: Creates a smaller image than the object?
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5f6da3be5256e8407c2e4412- 1convex mirrorfalse
- 2concave mirrorfalse
- 3plane mirrorfalse
- 4Convex mirror and concave mirrortrue
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Answer : 4. "Convex mirror and concave mirror"
Q: Polar satellites are used for high-resolution imaging of the earth’s surface because _____
1114 063c7c166bd6d9033208efbdf
63c7c166bd6d9033208efbdf- 1They have better camerasfalse
- 2They are very high above the surface of the earth and travel slowly to gather more informationfalse
- 3They are closer to the surface of the earth and can cover vast areas very quicklytrue
- 4They can be launched by most countries in the worldfalse
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Answer : 3. "They are closer to the surface of the earth and can cover vast areas very quickly"
Explanation :
Explanation: Since polar satellites orbit close to the surface of the earth, it is easier to click images of the planet's surface with greater detail. Their high orbital velocity enables them to view most of the surface strip-by-stip very quickly with which high-resolution images can be constructed.
Q: Mechanical energy is the sum of potential energy and ______ energy.
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64c22eccd3a6d4481eebda27- 1kinetictrue
- 2heatfalse
- 3electricalfalse
- 4chemicalfalse
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Answer : 1. "kinetic"
Explanation :
1. Mechanical energy is a combination of kinetic energy and potential energy.
2. Mechanical energy is defined as the sum of kinetic energy and potential energy used to do work on an object.
3. Mechanical energy is the form of energy that is related to the position and motion of an object.
Q: The unit of which physical quantity is not pascal?
1107 0605c55f33af5ff63fd6b4361
605c55f33af5ff63fd6b4361- 1Moment of inertiatrue
- 2Pressurefalse
- 3Stressfalse
- 4Young’s modulusfalse
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Answer : 1. "Moment of inertia"
Q: How is 'Power’ interpreted?
1106 05f869be0b7ad805e26c0af01
5f869be0b7ad805e26c0af01- 1Work done in energy transferfalse
- 2Working rate or energy transfer ratetrue
- 3Work done in a minutefalse
- 4Force applied to increase the loadfalse
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Answer : 2. "Working rate or energy transfer rate "
Q: What is the color that is used in danger signals?
1106 05fe46a3d57a5647868b6522c
5fe46a3d57a5647868b6522c- 1Yellow colorfalse
- 2Purple colorfalse
- 3Blue colorfalse
- 4Red colortrue
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Answer : 4. "Red color"
Q: Which point in the human eye is not very sensitive to light, is it called?
1105 05fe42412eee69a704db5d664
5fe42412eee69a704db5d664- 1Yellow Pointfalse
- 2blind pointtrue
- 3near pointfalse
- 4focal pointfalse
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Answer : 2. "blind point"
Q: Refraction of light is responsible for:
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6189e5479236c01fbea82faa- 1Shadow formationfalse
- 2Twinkling of starstrue
- 3Blue color of the skyfalse
- 4Rainbowfalse
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