Physics Quiz

Nuclear sizes are expressed in a unit named

2 Mark(s)

Fermi
Angstrom

101 is formed by?

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50+50
10x50
70+30
70+50

Radiocarbon is produced in the atmosphere as a result of

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Collision between fast neutrons and nitrogen nuclei present in the atmosphere.
Action of ultraviolet light from the sun on atmospheric oxygen.

Rectifiers are used to convert:

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Direct current to Alternating current
Alternating current to Direct current

Planets do not twinkle because

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They emit light of a constant intensity
Their distance from the earth does not change with time

100 is formed by?

2 Mark(s)

50+50
10x50
70+30
70+50

Mirage is due to:

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Unequal heating of different parts of the atmosphere
Magnetic disturbances in the atmosphere

Pick out the scalar quantity

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Force
Pressure

Metals are good conductors of electricity because:

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They contain free electrons.
The atoms are lightly packed.

It is easier to roll a stone up a sloping road than to lift it vertical upwards because

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Work done in rolling is more than in lifting.
Work done in lifting the stone is equal to rolling it.

Siphon will fail to work if:

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The densities of the liquid in the two vessels are equal.
The level of the liquid in the two vessels are at the same height.

Large transformers, when used for some time, become very hot and are cooled by circulating oil. The heating of the transformer is due to:

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The heating effect of current alone
Hysteresis loss alone

Which of the following terms is not used in the field of physics?

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Latent heat
Stock value

Stars appears to move from east to west because

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All stars move from east to west
The earth rotates from west to east

Pa(Pascal) is the unit for

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Thrust
Pressure

Light from the Sun reaches us in nearly

2 Mark(s)

2 minutes
4 minutes

The absorption of ink by blotting paper involves:

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Viscosity of ink
Capillary action phenomenon

Light year is a unit of

2 Mark(s)

Time
Distance

Physics Quiz : Question 1 of 18