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Physics

Physics
The slope of a velocity-time graph represents

Displacement
Distance
Speed
Acceleration

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Physics
Light from the star, Alpha Centauri, which is nearest to the earth after the sun, reaches the earth in

42 seconds
42 years
4.2 years
4.2 seconds

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Physics
Ozone layer above the surface of Earth provides a shield against

X-rays
Gamma rays
Ultra-violet rays
Infra-red rays

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Physics
In radio-communication, the signals emitted by transmitting antenna are reflected on

Troposphere
Ozonosphere
Ionosphere
Stratosphere

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Physics
A circular plate, a cube and a sphere, all made up of same material and having the samemass, are heated to 300°C and left in a room. Which of them will have the slowest rate of cooling?

Cube
All will cool at the same rate
Sphere
Circular plate

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Physics
One light year is equal to

8 trillion miles
6 trillion miles
9 trillion miles
2 trillion miles

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MORE MCQ ON Physics

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