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Physics

Physics
In a vacuum, all electromagnetic waves have the same

All listed here
Velocity
Wavelenth
Frequency

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Physics
Which of the following is arranged in order of decreasing conductivity?

Copper, Silver, Aluminium, Steel
Silver, Copper, Aluminium, Steel
Aluminium, Silver, Copper, Steel
Copper, Aluminium, Steel, Silver

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Physics
An electric fuse is based on

The chemical effect of the current
All of these
The heating effect of the current
The magnetic effect of the current

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Physics
An object having the capability to do work is said to possess

Force
Inertia
Pressure
Energy

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Physics
The absolute refractive index of any medium is always:

More than one
Less than one
1

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Physics
A body of mass 5 kg accelerates from 12 m/s to 20 m/s in 4 seconds due to the application of a force on it. Calculate the magnitude of this force (in N).

20
10
80
40

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