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Physics

Physics
Speed regulation of synchronous motor is

0.25
0.005
0.01
Zero

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Physics
Remote-sensing device has an inbuilt source of

Ultraviolet ray
G-ray
X-ray
Infrared ray

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Physics
By how many times are the Electrostatic forces stronger than the Gravitational Forces for a fixed distance?

1012
1036
2
102

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Physics
Which among the following waves is used for communication by artificial satellites ?

Micro waves
Radio waves
M.
Frequency of 1016 series

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Physics
When hot-water is sprinkled on a hotter glass tumbler, it breaks because

Glass suddenly contracts
Glass suddenly expands
Water evaporates
Glass reacts chemically with water

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Physics
Red light has a wavelength of 70 A°. In "nm" it is

0.07 nm
700 nm
70 nm
7 nm

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