Physics
Which of the following instrument is used to measure Soil Water Tension?

Psychrometer
Pyrometer
Tensiometer
Photometer

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Physics
Skating on ice is possible because

The pressure on the ice due to skate raises its melting point
The surface of ice is smooth
The pressure on the ice due to skate melts the ice by lowering its melting point forming a thin film of water
Ice is cold

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Physics
Which of the following options correctly explains the term heat budget?

It is a mode of transfer of heat through matter by molecular activity.
It is the balance between incoming and outgoing radiation
It is the amount of heat which the surface of earth receives from the sun.
It is the radiation from the earth in the form of long waves.

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