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Physics

Physics
The weight of a body acts through the centre of

Buoyancy
Gravity
Mass
Both (A) and (B)

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Physics
Which of the following is optical illusion?

Rainbow
Mirage
Earthshine
Halo

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Physics
Nuclear reactors used to produce electricity are based on

Cold fusion
Superconductivity
Nuclear fusion
Nuclear fission

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Physics
A real gas can act as an ideal gas in

High pressure and high temperature
Low pressure and low temperature
High pressure and low temperature
Low pressure and high temperature

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Physics
When a constant force acts on an object with a mass of 8 kg for a duration of 3 s. it increases the object's velocity from 4 m/s to 6 m/s . What is the magnitude of the applied force?

6.33 N
5.33 N
4.33 N
3.33 N

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Physics
For a freely falling body, the sum of kinetic energy and potential energy is always

Variable
Unity
Zero
Same

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