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Physics

Physics
Find the acceleration (in m/s2) of a body which accelerates from 25 m/s to 30 m/s in 10 seconds

11
5.5
0.5
1

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Physics
For accurate scientific work, temperatures are often measured by

Mercury thermometers
Platinum resistance thermometers
Alcohol thermometers
Thermoelectric thermometers

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Physics
Parsec is the unit of

Distance
Time
Magnetic line
Intensity of light

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Physics
When hot liquid is poured into a thick glass tumbler, it cracks because glass :

Has a very low specific heat
Is a bad conductor of heat so only inner surface expands
Has low temperature coefficient of expansion
Has high temperature coefficient of expansion

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Physics
The period of revolution of a certain planet in an orbit of radius R is T. Its period of revolution in an orbit of radius 4R will be:

4 T
2 T
1 T
8 T

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Physics
The distance between node and adjacent antinode is 30 cm. The wavelength is

90 cm.
60 cm.
120 cm.
30 cm.

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