Physics Practice Question and Answer
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Q: An object starts moving in its steady state. It attains a speed of 5 m / s in 2 seconds. What will be its acceleration?
815 05f869de3e5230d620733716e
5f869de3e5230d620733716e- 12.5 m/sec2true
- 22 m/sec2false
- 31 m/sec2false
- 40.4 m/sec2false
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Answer : 1. "2.5 m/sec2"
Q: The velocity of light in vacuum or air is
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61655d803ee3b5612c8e183f- 1$$3 x 10^8$$ m / sec .true
- 2$$2 x 10^4$$ m / sec .false
- 3$$9 x 10^2$$ m / sec .false
- 4$$3 x 10^11$$ m / sec .false
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Answer : 1. "$$3 x 10^8$$ m / sec . "
Q: Solar cells convert solar energy into what energy?
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60b4b725517f2874d53f5d0d- 1Electrical energytrue
- 2kinetic energyfalse
- 3mechanical energyfalse
- 4Thermal energyfalse
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Answer : 1. "Electrical energy"
Q: The velocity of wind is measured by –
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5ef1aedd7fed557ba2abd595- 1Hydrometerfalse
- 2Wind vanefalse
- 3Barometerfalse
- 4Anemometertrue
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Answer : 4. "Anemometer "
Q: Weighing 1 kilogram is the weight.
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61655de87d6182610f5d76ff- 11 Nfalse
- 210 Nfalse
- 39.8 Ntrue
- 49 Nfalse
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Answer : 3. "9.8 N "
Q: Used in solar cooker?
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5f6da8ddec13dd74800548f7- 1concave mirrortrue
- 2convex mirrorfalse
- 3plane mirrorfalse
- 4None of thesefalse
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Answer : 1. "concave mirror"
Q: What is the color that is used in danger signals?
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5fe46a3d57a5647868b6522c- 1Yellow colorfalse
- 2Purple colorfalse
- 3Blue colorfalse
- 4Red colortrue
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Answer : 4. "Red color"
Q: When a heated electric bulb glows -
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6089295dfd171c780883f3f9- 1Electrical energy is completely converted into light.false
- 2Electrical energy is partly converted into light energy and partly into heat energytrue
- 3Light energy is converted into electrical energy.false
- 4Electric energy is converted into magnetic energy .false
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Answer : 2. "Electrical energy is partly converted into light energy and partly into heat energy "
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