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Physics

Physics
The radiation initially produced in fluorescent tube is

Microwaves
Ultraviolet
Infrared
X-rays

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Physics
Sound waves in air are

transverse
electromagnetic
longitudinal
polarised

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Physics
Angle of friction and angle of repose are

Equal to each other
None of these
Not equal to each other
Proportional to each other

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Physics
What is the minimum velocity required for a rocket to overcome earth's gravity and travel into space?

11.2 km/sec
35 km/sec
18 km/sec
21 km/sec

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Physics
The freezing point of fresh water is ________ .

5°C
3°C
4°C
0°C

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Physics
In a optical fibre cable, the signal is propagated along the

Cladding
Both core and cladding
Surface and cladding
Inner Core

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