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Online Tests
Physics General Science Test Hard Mode MCQs With Answers
Question # 1
What is the average energy of N molecules of monoatomic gas?
Choose an answer
1/2 NkT
NkT
3/2 NkT
5/2 NkT
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Question # 2
In which region of electromagnetic spectrum does the Lyman series of hydrogen atom lie
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Ultraviolet
Infra red
Visible
X-ray
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Question # 3
In which case application of angular velocity is useful?
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When a body is rotating
When velocity of body is in a straight line
When velocity is in a straight line
None of these
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Question # 4
In LCR series AC circuit the phase angle between current and voltage is
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Any angle between 0 and ±π/2
π/2
π
Any angle between 0 and π/2
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Question # 5
A force of 10N is acting along y-axis its component along x-axis is
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10N
20N
100N
Zero N
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Question # 6
A particle is moving in a uniform magnetic field then
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Its momentum changes but total energy remains the same
Both momentum and total energy remains the same
Both changes
Total energy change but momentum remains
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Question # 7
If 2.2 kilowatt power is transmitted through a 10 ohm line at 22000 volt, the power loss in he form of heat will be
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0.1 watt
1 watt
10 watt
100 watt
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Question # 8
How much water a pump of 2kW can raise in one minute to a height of 10 m. take g = 10 m/s
2
?
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1000 liters
1200 liters
100 liters
2000 liters
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Question # 9
The modulus of rigidity of a liquid is
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Zero
1
Infinity
A value not one of those mentioned above
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Question # 10
When boron is added as an impurity to silicon the resulting material is
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n type conductor
n type semiconductor
p-type conductor
p-type semiconductor
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Question # 11
If the metal bob is a simple pendulum is replaced by a wooden bob, then its time period will
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Increase
Decreases
Remain the same
First 'A' then 'B'
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Question # 12
Which of the following is a scalar quantity?
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Density
Displacement
Torque
Weight
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Question # 13
Energy is stored in the choke coil in the form of
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Heat
Magnetic energy
Electric energy
Electro-magnetic energy
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Question # 14
When the length of a microscope tube increase, its magnifying power
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Decreases
Increases
Does not Change
May increase or decrease depending on the observer and the place of observation
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Question # 15
The peak voltage in 220 volt A.C. supply is nearly
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220 volt
253 volt
311 volt
440 volt
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Question # 16
What will be the duration of the day and night (in hour) if the diameter of the earth is suddenly reduced to half its original value, the mass remaining constant?
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12
6
3
2
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Question # 17
A wire of radius r has resistance R, It it is stretched to a wire of r/2 radius, then the resistance becomes
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2R
4R
16R
Zero
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Question # 18
To increase the magnification of a telescope
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The objective lens should be of large focal length and eyepiece should be of short focal length
The objective and eyepiece both should be of large focal lengths
Both the objective and eyepiece should be of smaller lengths
The objective should be small focal length and eyepiece should be of large focal length
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Question # 19
At constant volume temperature is increased. Then
Choose an answer
Collision on walls will be less
Number of collisions per unit time will increase
Collisions will be in straight lines
Collisions will not change
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Question # 20
The force between two charges 0.06 m apart is 5 N. If each charge is moved towards the other by 0.01 m, then the force between them will become
Choose an answer
7.20 N
11.25 N
22.50 N
45.00
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Question # 21
An ideal choked (used along with fluorescent tube) would be
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A pure resistor
A pure capacitor
A pure inductor
A combination of an inductor and a capacitor
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Question # 22
In which region of electromagnetic spectrum does the Lyman series of hydrogen atom lie
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Ultraviolet
Infrared
Visible
X-ray
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