Physics Questions Answers
Hi Friends ,
These are physics model questions and answers for preparing kerala PSC and all other competitive exams.
A.Madam Curie
B.James Chadwick
C.Rutherford
D.John Dalton
Answer: Option D
Explanation:
John Dalton discovered Atom in 1808,
Madam Curie discovered Radium in 1898,
James Chadwick discovered Neutron in 1932,
Rutherford discovered Proton in 1919.
2. Radian per second is unit of
A.Momentum
B.Moment of Inertia
C.Frequency
D.Angle Velocity
Answer: Option D
Explanation:
unit of Momentum is kilogram meter per second,
unit of Moment of Inertia is kilogram square meter,
unit of frequency is Hertz.
3. Unit of Pressure is
A.newton second
B.pascal
C.watt
D.newton per meter
Answer: Option B
Explanation:
newton second is unit of impulse,
watt is unit of Power,
newton per meter is unit of Surface Tension.
4. What is unit of Electrical Capacity ?
A.henry
B.farad
C.volt
D.ohm
Answer: Option B
Explanation:
henry is unit of Magnetic Induction,
volt is unit of Potential Difference,
ohm is unit of Electric Resistance.
5. Energy posses by a body in motion is called
A.Kinetic Energy
B.Potential Energy
C.Both of Above
D.None of Above
Answer: Option A
6. Solar cell converts
A.Sound energy into electrical energy
B.Electrical energy into mechanical energy
C.Solar energy into electrical energy
D.Electrical energy into light energy
Answer: Option C
7. All planets move around the sun in elliptical orbits, with the sun being at rest at one focus of the orbit.
A.True
B.False
Answer: Option A
8. What is escape velocity ?
A.Escape velocity is the maximum velocity with which a body should be projected from the surface of earth so it do not go beyond gravitational field of earth.
B.Escape velocity is the minimum velocity with which a body should be projected from the surface of earth so it do not go beyond gravitational field of earth.
C.Escape velocity is the minimum velocity with which a body should be projected from the surface of earth so as it goes out of gravitational field of earth and never return to earth.
D.Escape velocity is the maximum velocity with which a body should be projected from the surface of earth so as it goes out of gravitational field of earth and never return to earth.
Answer: Option C
9. Orbital speed of a satellite is dependent of its mass.
A.True
B.False
Answer: Option B
Explanation:
Orbital speed of a satellite is independent of its mass.
10. If lift is going up with acceleration, the apparent weight of a body is
A.may be more or less than true weight
B.equal to the true weight
C.less than the true weight
D.more than the true weight
Answer: Option D
11. Electric Motor converts
A.Electrical energy into mechanical energy
B.Mechanical energy into Electrical energy
C.Electrical energy into light energy
D.None of above
Answer: Option A
12. What is unit of Work and Energy ?
A.Joule
B.kilogram
C.amphere
D.meter
Answer: Option A
13.Atmospheric pressure is measured by
A.Tonometer
B.Pyrometer
C.Barometer
D.Thermometer
Answer: Option C
14. Sudden fall in barometer is indication of
A.Storm
B.Rain
C.Tide
D.Clear weather
Answer: Option A
15. Which is true
A.In a static liquid at same horizontal level, pressure is more at centre
B.In a static liquid at same horizontal level, pressure is less at centre.
C.In a static liquid at same horizontal level, pressure is same at all points
D.In a static liquid at same horizontal level, pressure is different at all points
Answer: Option C
16. Force of attraction between the molecules of different substances is called
A.Surface tension
B.Cohensive force
C.Adhesive force
D.None of above
Answer: Option C
Explanation:
Cohensive force - Force of attraction between the molecules of same substance is called Cohensive force.
17. The force which opposes the relative motion between different layers of liquid or gases is called
A.Critical Velocity
B.Streamline Flow
C.Terminal Velocity
D.Viscous Force
Answer: Option D
Explanation:
Critical Velocity - The maximum velocity upto which fluid motion is streamline is called Critical Velocity.
Streamline Flow - If velocity of all fluid particles is same all the time then it can be said in streamline flow.
Terminal Velocity - When a body falls in viscous medium, its velocity first increases and finally becomes constant. The constant velocity is called terminal velocity.
18. The angle of reflection is equal to the angle of incidence.
A.True
B.False
Answer: Option A
19. Which are the primary Colours ?
A.Yellow, Green, Blue
B.Red, Magenta, Blue
C.Red, Green, White
D.Red, Green, Blue
Answer: Option D
Explanation:
Red, Green, Blue are primary colors. All the colors can be produced by them by mixing in different proportions. Interesting.
20. Device used to measure potential difference between two points in a circuit is ?
A.Ammeter
B.Galvanometer
C.Voltmeter
D.None of above
Answer: Option C
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| PSC G.k questions and answers -physics |
PSC G.k questions and answers -first in India : https://a2zgkinfo.blogspot.com/2017/12/psc-gk-questions-and-answers-first-in.html
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