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Physics

Physics
What type of lens is used in a magnifying glass

Plano-concave
Concave
None of these
Convex

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Physics
Why the needle of iron swims on water surface when it is kept gently ?

It will remain under the water, when it will displace more water than its weight
Due to its shape
Due to surface tension
The density of needle is less than that of water

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Physics
Quality of transmission depends upon

Nature of signal only
Nature of medium only
Both (A) and (B)
Neither A nor B

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Physics
A television channel is characterised by

Size of picture tube
Velocity of transmitted signal
Physical dimension of television screen
Frequency of transmitted signal

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Physics
Which of the metals has the maximum thermal conductivity?

Copper
Aluminium
Iron
Silver

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Physics
A permanent magnet can affect

Both A & B
Electromagnets
Magnets
None of these

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MORE MCQ ON Physics

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