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Physics

Physics
In general, which is the cause of a sea breeze?

Heat
All listed here
Pressure
Specific heat

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Physics
A copper disc has a hole. If the disc is heated, the size of the hole

Decreases
Increases
First increases and than decreases
No change

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Physics
The wave like properties of electrons are useful in

Magnifying objects
All of these
Weather reports
Lasers

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Physics
Brightness of bulb depends on voltage or current?

None
Current
Both A & B
Voltage

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Physics
A single fixed pulley is used to draw water from a well because

Force is applied in a convenient direction
Efficiency is 100%
Velocity ratio is low
Mechanical advantage is high

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Physics
Wollen clothes keep the body warm because

Wool absorbs radiant heat from outer objects
Wool is a bad conductor
Wool rejects heat from the outer objects
Wool increases the temperature of the body

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MORE MCQ ON Physics

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