The standard used for measuring a physical quantity is called unit.
Units are of 2 types:
- Fundamental Unit
- Derived Unit
1. What is the SI unit of light year?
A) Intensity of Light
B) Decibel
C) Distance
D) Time
Answer: C) Distance
2. What is the SI unit of luminous intensity?
A) Watt
B) Lux
C) Candela
D) Lumen
Answer: C) Candela
3. Newton is equal to?
A) 1 kg m/s2
B) 1 kg m/s-2
C) 1 kg m/s-1
D) 1 kg m/s1
Answer: A) 1 kg m/s2
4. 1 pound is equal to how many ounces?
A) 20
B) 12
C) 18
D) 16
Answer: D) 16
5. The rate of change of momentum of a body is equal to?
A) Impulse
B) Force
C) Power
D) Energy
Answer: B) Force
6. Negative acceleration is in the opposite direction of?
A) Force
B) Distance
C) Velocity
D) Momentum
Answer: C) Velocity
7. Which one of the following is a scalar quantity?
A) Gravity
B) Mass
C) Weight
D) Momentum
Answer: B) Mass
8. 1 Horsepower is equal to how many watts?
A) 750
B) 780
C) 746
D) 700
Answer: C) 746
9. Distance of star is measured in?
A) Light Year
B) Cosmic Kilometer
C) Seller Mile
D) Galactic Unit
Answer: A) Light Year
10. Which instrument is used to measure atmospheric pressure?
A) Thermometer
B) Hygrometer
C) Anemometer
D) Barometer
Answer: D) Barometer
11. What is the point of lever which does not move called?
A) Core
B) Fulcrum
C) Load
D) Effort
Answer: B) Fulcrum
12. What type of energy is possessed by a stretched rubber band?
A) Thermal Energy
B) Kinetic Energy
C) Potential Energy
D) Chemical Energy
Answer: C) Potential Energy
13. When a bullet is fired from a gun, its potential energy is converted into?
A) Chemical Energy
B) Heat Energy
C) Mechanical Energy
D) Kinetic Energy
Answer: D) Kinetic Energy
14. The energy possessed by a body due to its change in position or shape is called?
A) Potential Energy
B) Chemical Energy
C) Nuclear Energy
D) Kinetic Energy
Answer: A) Potential Energy
15. A geostationary satellite has an orbital period of?
A) 24 Hours
B) 12 Hours
C) 6 Hours
D) 3 Hours
Answer: A) 24 Hours
16. Soap bubble attains spherical shape due to?
A) Viscosity
B) Surface Tension
C) Pressure
D) Inertia
Answer: B) Surface Tension
17. What is the SI unit of Power?
A) Watt
B) Work
C) Electricity
D) Current
Answer: A) Watt
18. If some object is weighed when submerged in water, what will happen to its weight compared to its weight in air?
A) Increase
B) Decrease
C) Remain exactly the same
D) Increase or decrease cannot be predicted
Answer: B) Decrease
19. When pure water boils vigorously, the bubbles that rise to the surface are composed primarily of what?
A) Air
B) Hydrogen
C) Hydrogen and Oxygen
D) Water Vapor
Answer: D) Water Vapor
20. Bernoulli’s theorem is based on the conservation of?
A) Mass
B) Momentum
C) Conservation of Energy
D) Static Fluid Pressure
Answer: Conservation of Energy
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50 Miscellaneous Gk MCQs About Physics: https://testyourgk.in/50-mcqs-about-physics/
21. Bernoulli’s theorem is applicable to?
A) Flow of Liquids
B) Viscosity
C) Surface Tension
D) All of the Above
Answer: A) Flow of Liquids
22. Which physicists explained the existence of Booyant force?
A) Archimedes
B) Blaise Pascal
C) Charles Augustine
D) Issac Newton
Answer: A) Archimedes
23. An ideal liquid flows through a horizontal tube of variable diameter. The pressure is lowest where the?
A) Velocity is highest
B) Velocity is lowest
C) Diameter is largest
D) None of these
Answer: A) Velocity is highest
24. Which of the following physicists explained the existence of Booyant force?
A) Archimedes
B) Blaise Pascal
C) Charles Augustine de Coulomb
D) Isaac Newton
Answer: A) Archimedes
25. If the earth stops rotating, then the value of gravity will be?
A) Increase
B) Decrease
C) Remain Constant
D) Become Zero
Answer: A) Increase
26. The velocity of raindrop attains constant value because of?
A) Surface Tension
B) Upthrust of Air
C) Viscous Force Exerted by Air
D) Air Currents
Answer: C) Viscous force exerted by air
27. The terminal velocity of a small sized spherical body of radius falling in a viscous liquid is proportional to?
A) 1/2
B) 1
C) r2
D) 2
Answer: C) r2
28. The velocity of wind is measured by?
A) Barometer
B) Anemometer
C) Hydrometer
D) Manometer
Answer: B) Anemometer
29. When the terminal velocity is reached, the acceleration of a body moving through a viscous medium is?
A) Zero
B) Positive
C) Negative
D) None of these
Answer: A) Zero
30. If temperature rises, the coefficient of viscosity of liquid will be?
A) Decreases
C) Remains unchanged
B) Increases
D) None of these
Answer: A) Decreases
31. A small and a large raindrop are falling through air then?
A) The large drop moves faster
B) The small drop moves faster
C) Both moves with same speed
D) None of the above
Answer: A) The large drop moves faster
32. The weight of the body at the center of the earth is?
A) Infinite
B) Zero
C) Double of Current weight
D) None of the Above
Answer: B) Zero
33. When some detergent is added to water, the surface tension?
A) Increases
B) Decreases
C) Remains unaffected
D) None of these
Answer: B) Decreases
34. If a liquid wets a solid surface, the angle of contact is?
A) 0°
B) 90°
C) Less than 90°
D) Greater than 90°
Answer: C) Less than 90°
35. A liquid will not wet the surface of solid if the angle of contact is?
A) Acute Angle
B) Obtuse Angle
C) Zero
D) π/2
Answer: B) Obtuse Angle
36. The tendency of liquid drop to contract and occupy minimum area due to?
A) Surface Tension
B) Vapor Pressure
C) Density
D) Viscosity
Answer: A) Surface Tension
37. The angle of contact of a liquid with a solid does not depend on?
A) The angle of the inclination of the solid surface to the liquid surface
B) The nature of the liquid and the solid
C) The medium which exists above the free surface of the liquid
D) None of these
Answer: A) The angle of the inclination of the solid surface to the liquid surface
38. Density is the ratio of?
A) Mass X Volume
B) Volume / Mass
C) Mass + Volume
D) Mass / Volume
Answer: D) Mass / Volume
39. When the temperature increases, the angle of contact of a liquid?
A) Increases
B) Decreases
C) Remain The Same
D) None of These
Answer: B) Decreases
40. Two capillary tubes of different diameters are dipped in water. The rise of water is?
A) Greater in the tube of smaller diameter
B) Greater in the tube of larger diameter
C) Same in both tubes
D) None of these
Answer: A) Greater in the tube of smaller diameter
41. Which principle involved in the absorption of water by soil?
A) Condensation
B) Capillary action
C) Principle of absorption
D) Suction action
Answer: B) Capillary action
42. When there are no external forces the shape of a liquid drop is determined by?
A) surface tension of the liquid
B) Density of the liquid
C) Viscosity of air
D) Temperature of air
Answer: A) surface tension of the liquid
43. Insects can move on the surface of water without sinking due to?
A) Dynamic lift
B) Viscosity of water
C) Surface tension of water
D) None of the above
Answer: C) Surface tension of water
44. Meniscus of mercury in a capillary is?
A) Concave
B) Convex
C) Plane
D) Infinite
Answer: B) Convex
45. With the rise of temperature, the surface tension of a liquid is?
A) Increases
B) Decreases
C) Remains unchanged
D) None of these
Answer: B) Decreases
46. What is the dimensional formula for universal gravitational?
A) M²
B) Convex
C) M-1L3T-2
D) Cylindrical
Answer: C) M-1L3T-2
47. A student measures certain lengths using a meter scale having least count equal to 1 mm. Which one of the following measurements is more precise?
A) 0.50 mm
B) 29.07 cm
C) 0.925 m
D) 910 mm
Answer: C) 0.925 m
48. Water drops do not stick to the oily surface due to?
A) Lack of adhesive force
B) Surface tension
C) Cannot mix each other
D) Water is lighter than oil
Answer: A) Lack of adhesive force
49. Newton’s first law is also called as?
A) Law of Moments
B) Law of Inertia
C) Law of Momentum
D) Law of Energy
Answer: B) Law of Inertia
50. If an object moves at a non-zero constant acceleration for a certain interval of time, then the distance it covers in that time?
A) Depends on its initial velocity.
B) Is independent of its initial velocity.
C) Increases linearly with time.
D) Depends on its initial displacement.
Answer: A) Depends on its initial velocity.
51. Fat can be separated from milk in a cream separator because of?
A) Cohesive Force
B) Gravitational Force
C) Centripetal Force
D) Centrifugal Force
Answer: D) Centrifugal Force
52. A liquid drop tends to assume a spherical shape because of?
A) Surface Tension
B) Viscous Force
C) Gravitational Force
D) Elastic Force
Answer: A) Surface Tension
53. Creation of something from nothing is against the law of?
A) Conservation of Momentum
B) Conservation of Mass-Energy
C) Multiple Proportions
D) Constant Proportions
Answer: B) Conservation of Mass-Energy
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