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Physics

Physics
When a light wave is reflected from a mirror, there is a change in its

Wavelength
Frequency
Velocity
Amplitude

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Physics
For Gamma radiation, what stops its penetrating abilities?

All of these
Steal
Lead
Concrete

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Physics
What changes will happen to a bowl of ice and water kept at exactly zero degree Celsius ?

Only some ice will melt
All water will become ice
All ice will melt
No change will happen

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Physics
The filament of electric bulb is made up of :

Copper
Nichrome
Tungsten
Lead

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Physics
The height of a geo-stationary satellite from the Earth's surface is approximately :

36,000 km
None of these
30,000 km
42,000 km

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Physics
Least audible sound for most of the human ear is :

10.0 µ bar
0.0002 µ bar
0.005 µ bar
5.0 µ bar

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