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Physics Practice Questions Set 7
For India's Top Government Exams
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Which type/types of pen uses/use capillary action in addition to gravity for the flow of ink?
*
1 point
Fountain pen
Ballpoint pen
Gel pen
Both ballpoint and gel pens
When ice melts
,
its
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1 point
volume decreases
volume increases
volume and mass both decrease
volume decreases while mass increases
A device, which is used in our TV set, computer, radio set for storing the electric charge, is ___
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1 point
resistor
inductor
capacitor
conductor
It is difficult to cut things with a blunt knife because
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1 point
the pressure exerted by a knife for a given force increases with an increase in bluntness
a sharp edge decreases the pressure exerted by a knife for a given force
a blunt knife decreases the pressure of a given force
a blunt knife decreases the area of the intersection
When deep-sea fishes are brought to the surface of the sea, their bodies burst. This is because the blood in their bodies flows at a very ___
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1 point
high speed
high pressure
low speed
low pressure
If two conducting spheres are separately charged and then brought in contact then
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1 point
the total energy of the two spheres is conserved
the total charge on the two spheres is conserved
both the total energy and the total charge are conserved
the final potential is always the mean of the original potential of the two spheres
A rectifier is an electronic device used to convert ___
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1 point
AC voltage into DC voltage
DC voltage into AC voltage
sinusoidal pulse into the square pulse
None of the above
A bus travels at a speed of 50 km
/
h to go from the origin of its destination al a distance of 300 km and travels at a speed of 60 km/h to return to the origin. What is the average speed of the bus?
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1 point
54.55 km/h
55 km/h
55.55 km/h
54 km/h
In a step-down transformer, the AC output gives the
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1 point
current more than the input current
current less than the input current
current equal to the input current
voltage more than the input voltage
DIRECTION:
The following question consist of two statements, Statement l and Statement ll. You are to examine these two statements carefully and select the answers to these items using the codes given below.
Statement l:
Pulling a lawn roller is easier than pushing it.
Statement ll:
Pushing increases the apparent weight and hence the force of friction.
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1 point
Both the statements are true and statement ll is the correct explanation of statement l
Both the statements are true, but statement ll is not the correct explanation of statement l
Statement l is true, but statement ll is false
Statement l is false, but statement ll is true
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