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NAT I Engineering Physics MCQs With Answers
Question # 1
In a capacitive circuit
Choose an answer
Current leads voltage by phase of π/2
Voltage leads current by phase of π/2
Current and voltage are in same phase
Sometime current and sometime voltage leads
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Question # 2
With the increase of temperature viscosity
Choose an answer
Increase
Decrease
Remains same
Doubles
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Question # 3
A body moves a distance of 10 m along a straight line under the action of a force of 5 Newtons, if the work done is 25 joules the angle which the force takes with the direction of motion of the body is:
Choose an answer
0°
30°
60°
90°
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Question # 4
Who explained the origin of the Fraunhofer lines?
Choose an answer
Fraunhoffer
Kirchhoff
Fresnel
Snell
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Question # 5
Surface tension of water is due to
Choose an answer
Inter molecular attraction
Intermolecular spaces
Inter molecular repulsion
None of above
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Question # 6
Two bodies with masses M
A
and M
B
are moving with equal kinetic energy.Their linear moments are numerically in a ratio | P
A
| : |P
B
| will be:
Choose an answer
M
B
:
M
A
M
A
:
M
B
√
M
A
: √
M
B
M
A
2
:
M
B
2
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Question # 7
When the displacement is half of the amplitude the ratio of potential energy to the total energy is
Choose an answer
1/2
1/4
1
1/8
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Question # 8
When boron is added as an impurity to silicon the resulting material is
Choose an answer
n type conductor
n type semiconductor
p-type conductor
p-type semiconductor
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Question # 9
The fundamental unit which has same power in the dimensional formula of surface tension and viscosity is:
Choose an answer
Mass
Length
Time
None
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Question # 10
Which of the following is equal to:
joule x ohm / volt x second ?
Choose an answer
Ampere
Volt
Watt
Tesla
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Question # 11
Choose the correct statement
Choose an answer
Both an ammeter and voltmeter should have small resistance
Both an ammeter and a voltmeter should have large resistance
An ammeter should have large resistance and a voltmeter should have small resistance
An ammeter should have small resistance and a voltmeter should have large resistance
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