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Physics

Physics
Eddy current is generated by

Induction
Conduction
Convection
Direct Current

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Physics
Which of the following is not true about X-rays?

Can affect photographic plates
Travel with the speed of light
Can be reflected or refracted
Have low penetrating power

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Physics
In the remote control of television, electromagnetic waves used are

Infrared
Microwave
Ultraviolet
Radiowave

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Physics
The optical phenomenon that is primarily responsible for the observation of rainbow on a rainy day is

Interference
Reflection
Dispersion
Diffraction

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Physics
Two electric bulbs marked 25W – 220V and 100W – 220V are connected in series to a 440Vsupply. Which of the bulbs will fuse?

Neither
25 W
100 W
Both

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Physics
A man stands in a lift which accelerates upwards. The resultant reaction force on the floor of the lift is

Same as the weight of the man
Zero
Greater than the weight of the man
Less than the weight of the man

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