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Physics

Physics
Which of the following is indicated by the colour of a star ?

Temperature
Distance
Size
Weight

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Physics
The work done by the string of a simple pendulum during one complete oscillation is equal to

Zero
Potential energy of the pendulum
Total energy of the pendulum
Kinetic energy of the pendulum

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Physics
Which of the following has the lowest frequency?

Xrays
Ultra violet rays
Visible light
Gamma rays

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Physics
Flywheel is an important part of a steam engine because it :

Accelerates the speed of the engine
Gives strength to the engine
Helps the engine in keeping the speed uniform
Decreases the moment of inertia

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Physics
Vehicles use ________ to see the objects coming from behind.

Concave mirror
Convex lens
Convex mirror
Concave lens

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Physics
An oil drop spreads over water because

Oil is lighter than water
water has a higher surface tension
Oil does not mix with water
Oil is more viscous

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