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Physics

Physics
An object of 10 kg is moving with a speed of 2 m/s. The kinetic energy of the object is

25 J
20 J
10 J
40 J

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Physics
The Solar energy produced by

Combustion reaction
None
Fusion reaction
Fission reaction

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Physics
What will happen if an object is dropped from a height and there is no air resistance?

Both speed and acceleration will increase
Its acceleration will increase
Its speed will increase
It will fall with a constant speed and acceleration

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Physics
Optical fibre works on which of the following principle of light?

Refraction
Total internal reflection
Diffraction
Reflection

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Physics
Which of the following are methods of heat transfer?

Revolution
Evaporation
Convection
Thermal Expansion

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Physics
If an object moves with constant velocity,

It must have constant direction
It must have constant speed
It must have constant speed in constant direction
None of these

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