if you guys are searching for physics gk questions with answers then you can check our post in this post we are adding physics gk questions for competitive exams so if you are preparing g for any competitive exam then you download this pdf.
physics gk questions with answer
1. What is the unit of Light Year?
A) Distance
B) Time
C) intensity of light
D) force
ANSWER= (A) Distance
2. What is the SI unit of light intensity?
A) Om
B) Watt
C) Candela
D) lumens
ANSWER= (C) Candela
3. What is commonly used in a magnifying glass?
A) convex mirror
B) convex lens
C) concave mirror
D) concave lens
ANSWER= (B) Convex lens
4. What is the speed of sound in the air?
A) 232 m/s
B) 332 m/s
C) 320 m/s
D) 432 m/s
ANSWER= (B) 332 m/s
30. Sound is an example of which type of wave?
A) transverse mechanical wave
B) longitudinal mechanical wave
C) transverse nonmechanical wave
D) Longitudinal non-mechanical wave
ANSWER= (B) Longitudinal mechanical wave
6. What is the normal temperature of the human body?
A) 290 Kelvin
B) 300 Kelvin
C) 310 Kelvin
D) 350 Kelvin
ANSWER= (C) 310 Kelvin
7. Light is an example of which type of wave?
A) transverse wave
B) longitudinal wave
C) Both of the above
D) none of these
ANSWER= (A) transverse wave
8. A heater coil is made of which element?
A) Tungsten
B) copper
C) iron
D) Nichrome
ANSWER= (D) Nichrome
9. What is the smallest unit of length?
A) Micron
B) nanometer
C) Fermimeter
D) centimeter
ANSWER= (C) Fermimeter
10. Which type of mirror is used for shaving?
A) concave mirror
B) convex mirror
C) plane mirror
D. ALL OF THE ABOVE
ANSWER= (A) concave mirror
11. Which scientist invented the positron?
A) JJ Thomson
B) Rutherford
C) Anderson
D) Goldstein
ANSWER= (C) ANDERSON
12. What is the unit of Curie?
A) Radioactivity
B) temperature
C) Energy
D) power
ANSWER= (A) radioactivity
13. Relative humidity is measured by?
A) Hydrometer
B) Hygrometer
C) Lactometer
D) barometer
ANSWER= (B) Hygrometer
14. Sound waves with a frequency of more than 20000 are an example of which type of wave?
A) Ultrasonic wave
B) audio wave
C) inaudible wave
D) none of these
ANSWER= (C) Infrared wave
15. Which type of mirror is used in front of vehicles
A) convex mirror
B) concave mirror
C) plane mirror
D) parabola mirror
ANSWER= (A) convex mirror
16. By which of the following electrical energy is converted into mechanical energy
A) Dynamo
B) Transformer
C) electric motor
D) indicator
ANSWER= (C) Electric Motor
17. If the length of a resistive wire is increased, what will be the effect on its resistance?
A) grows
B) decreases
C) remains constant
D. ALL OF THE ABOVE
ANSWER= (A) increases
18. Which of the following is the light with the shortest wavelength?
A) Red
B) Yellow
C) blue
D) Violet
ANSWER= (D) Violet
19. Photon is the fundamental unit of –
A) Light
B) Gravity
C) Electricity
D) Magnetism
ANSWER= (A) light
20. At what temperature is the density of water highest?
A) – 4 °C
B) 0 °C
C) 4 °C
D) – 1 degree Celsius
ANSWER= (C) 4 °C
21. Heavy water is used in a nuclear reactor as
A) coolant
B) Controller
C) Examiner
D) diluent
ANSWER= (D) diluent
22. By which instrument the intensity of an earthquake is measured?
A) Seismograph
B) barometer
C) Anemometer
D) Lactometer
ANSWER= (A) Seismograph
23. 1 horsepower is equal to how many watts?
A) 435 watts
B) 746 watts
C) 796 watts
D) 876 watts
ANSWER= (B) 746 Watts
23. In which direction does a freely hanging magnet always stay?
A) in the north-east direction
B) in the south-west direction
C) in the north-south direction
D) in the north-west direction
ANSWER= (C) in north-south direction
24. The electrical resistance of a conductor is independent of
A) temperature
B) pressure
C) Area of cross-section
D) Length
ANSWER= (B) pressure