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Physics

Physics
Which colour has the highest frequency?

Violet
Red
Green
Indigo

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Physics
Atmospheric pressure exerted on earth is due to

Rotation of earth
Uneven heating of earth
Gravitational pull
Revolution of earth

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Physics
Which one among the following doesn't have any effect on velocity of sound ?

Humidity
Pressure
Temperature
Density

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Physics
A boat loaded with rocks floats in the middle of a swimming pool. A man in the boat throws the rocks overboard. The level of water in the pool will

Increase
First decrease and then increase
Decrease
Remains the same

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Physics
For an object, the state of rest is considered to be the state of ________ speed.

Inverse
Increasing
Zero
Decrease

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Physics
It is more difficult to walk on ice than on a concrete road because

There is very little friction between the ice and feet pressing it
None of these
There is more friction between the ice and feer
Ice is soft when compared to concrete

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