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Physics

Physics
One bar is equal to

106 Pa
105 Pa
103 Pa
104 Pa

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Physics
A photo-electric cell converts

Mechanical energy to electric energy
Heat energy to mechanical energy
Light energy to electrical energy
Light energy to chemical energy

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Physics
Which one of the following is not a feature of Indifference Curve?

They slope downwards to the right
They are parallel to each other
They do not intersect each other
They are concave to each other

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Physics
The modulus of rigidity is the ratio of

Volume stress to volume strain
Longitudinal stress to longitudinal strain
Tensile stress to tensile strain
Shearing stress to shearing strain

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

4.2 years
4.2 seconds
42 seconds
42 years

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Physics
After long periods of use, a grey spot develops on the inside of a bulb. This is because

Glass undergoes a change due to the heat
The tungsten filament evaporates and collects there
The heat of the bulb scorches the glass at the top
Dust inside the bulb condenses on the top

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