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WorksheetsPhysics
Total questions: 12
Worksheet time: 7mins
Name
Class
Date
1.
Metals are good conductors of electricity because
a)
they contain free electrons
b)
the atoms are lightly packed
c)
they have high melting point
d)
all of the above
2.
Planets do not twinkle because
a)
they emit light of a constant intensity
b)
Their distance from the earth does not change the time
c)
They are very far away from the earth resulting in decrease in intensity of light
d)
They are nearer to earth and hemce we recieve a greater amount of light and, therefore minor variations in the intensity are not noticeable
3.
Pa (Pascal) is the unit for
a)
Thrust
b)
Pressure
c)
Frequency
d)
Conductivity
4.
Stars appears to move from east to west because
a)
All stars move from east to west
b)
The earth rotates from west to east
c)
The earth rotates from east to west
d)
The background of the stars moves from west to east
5.
Light from the sun reaches us in nearly
a)
2 minutes
b)
4 minutes
c)
8 minutes
d)
16 minutes
6.
Light year is a unit of
a)
Time
b)
Distance
c)
Light
d)
Intensity of light
7.
Large transformers, when used for some time, become very hot and are cooled by circulating oil. The heating of the transformer is due to
a)
The heating effect of current alone
b)
Hysteresis loss alone
c)
both the heating effect of current and hysteresis loss
d)
intense sunlight at noon
8.
The absorption of ink by blotting paper involves
a)
Viscosity of ink
b)
Capillary action phenomenon
c)
Diffusion of ink through the blotting
d)
Siphon action
9.
It is easier to roll a stone up a sloping road than to lift it vertical upwards because
a)
work done in rolling is more than in lifting
b)
work done in lifting the stone is equal to rolling it
c)
Work done in both is same but the rate of doing work is less in rolling
d)
work done in rolling a stone is less than in lifting it
10.
When exposed to lower air pressure, the boiling point of water
a)
Decreases
b)
Increases
c)
Remains the same
d)
All of the above
11.
Which of these is a unit of work?
a)
Watt
b)
Meter
c)
Joule
d)
Newton
12.
The orbits of the planets around the sun are
a)
Circular
b)
Horizontal
c)
Elliptical
d)
Diagonal
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