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Physics

Physics
Which one of the following wavelengths of light is most effective in photosynthesis ?

Green
Yellow
Blue
Orange

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Physics
The fundamental scientific principle in the operation of battery is

Dissociation of electrolytes
Acid-base interaction
Oxidation-reduction
Dialysis

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Physics
A stone is dropped from the roof of a house towards the ground. The kinetic energy of the stone will be maximum:

When it is just on the half-way
Just before it touches the ground
When it touches the ground
Just after it is dropped

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Physics
Acceleration is the rate of change of

Velocity
Jerk
Speed
Jounce

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Physics
Safety fuse wire used in domestic electrical appliances is made of metal of low

Conductance
Melting point
Resistance
Specific gravity

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Physics
It is difficult to cook rice

At the top of a mountain
Same anywhere
Under a mine
At the sea level

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