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Physics

Physics
The dimensional formula for universal gravitational constant is

M 1L3T2
M–1L3T–2
M–2
ML2T–2

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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

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

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Physics
Which is a correct way to measure wavelength?

None of these
Nearest peak to nearest trough
Nearest peak to peak
Nearest trough to peak

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Physics
1 WH =

3600 joules
36 joules
36000 joules
360 joules

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Physics
Carbon Arc lamps are commonly used in

Cinema projectors
Vehicles
Domestic lighting
Photography

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Physics
Find the resistance (in mega) of a wire of length 20m, cross sectional area 1 cm2 and made of a material of resistivity 200m.

4000
2000
80
40

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