Physics notes for class 12 – MCQs

Physics notes for class 12 – MCQs

Here, we are giving you a list of 50 important MCQs for class 12. Hopefully, these notes of MCQs will help you.

1. Precise measurement is the one which has,
A. Absolute precision
B. Less precision
C. Max precision
D. Both A and B
E. None of these

2. Number of significant figures in 0.0010 are,
A. One
B. Two
C. Three
D. Four
E. None of these

3. Which of the following is a supplementary unit?
A. Degree
B. Radian
C. Steradian
D. Both B and C
E. None of these

5. The angle between two Vectors A and B can be found by
A. Head to tail rule
B. Their cross product
C. Their dot product
D. Both A and B
E. None of these

6. The irregular and unsteady flow of fluid are known as?
A. Turbulent flow
B. Streamline flow
C. Normal flow
D. All of above
E. None of these

7. The frictional force is present in
A. Gases
B. Liquids
C. Solid
D. All of above
E. None of these

8. Drag force depends upon, according to strokes law?
A. Coefficient of viscosity
B. Terminal velocity of the body
C. The radius of the spherical body
D. All of these
E. None of these

9. The force that appears as a result of interaction between two moving charges is known as
A. Magnetic force
B.Electrostatic force
C. Induced force
D. Gravitation force

10. When a charge passes through a region undeflected, then F(e)=F(m)_______
A. B parallel to E
B. B=0
C. Both A and B
D. Non
E. All of these

11.The direction of vectors L*B is
A. Same as Magnetic field
B. Same as force
C. Same as Electric force
D. Length conduction
E. None of these

12. Electric current produced magnetic field this fact is discovered by:
A. Henry
B. Maxwell
C. Oersted
D. Newton
E. None of these

13. Parallel Lines carrying current in same direction will:
A. Remain at rest
B. Repel each other
C. Attract each other
D. Start rotating
E. None of these

14. Cathode ray oscilloscope work by:
A. Proton
B. Electron
C. Muons
D. Neutrons

15. what is pressure in the narrow pipe is if steam lines are close together
A. Smaller
B. Larger
C. Remain same
D. Zero
E. None of these

16. The power of a concave lens is
A. real
B. virtual
C. positive
D. negative

17. A convex lens gives a virtual image only when the objects lies
A. between principal focus and center of curvature
B. beyond 2 f
C. at the principal focus
D. between principal focus and optical center

Ans: D

18. In going form a denser to rarer medium a ray of light is
A. un-deviated
B. bent away from the normal
C. bent towards the normal

19. Light signals pass through multimode graded index fiber due to
A. continuous refraction
B. total internal reflection
C. both continuous refraction and total internal reflection
D. diffraction

20. A lens which converges a beam of parallel rays to a point is called
A. diverging (or concave) lens
B. converging (or convex) lens
C. planoconcave lens
D. plano-convex lens

21. It is observed that an emf is set up conductor when it moves across a_____
A. Magnetic field
B. Gravitational field
C. Electric field
D. All of these
E. None of these

22. Induced emf is a phenomenon which is due to _______
A. Motion
B. Changing B
C. Changing flux
D. All of these
E. None of these

23. what is the amplitude at resonance of a vibrating body situated in the air become
A. Maximum
B. Minimum
C. Infinite
D. Zero
E. None of these

24. What is the highest temperature at which the liquefication of gasses take place?
A. Normal
B. Absolute
C. Constant
D. Critical
E. None of these

25. Gas pressure is defined as
A. Mass per unit volume
B. Energy per unit volume
C. Force per unit area
D. Energy per unit area
E. None of these

26. At constant pressure, the graph between V And T is
A. Parabola
B. Hyperbola
C. Straight line
D. Ellipse
E. None of these

27. What happens when solid materials are heated, they
A. Decrease in volume
B. Decrease in mass
C. Expand
D. Contract

28. When a metallic rod is heated, its change in length is
A. Directly proportional to its original length
B. Inversely proportional to the original length
C. Independent of its original length
D. Inversely proportional to the rise of temperature
E. None of these

29. Bimetallic Strips are used in thermostats
A. For heating
B. For cooling
C. Both A and B
D. None of these

30. Ice become slippery when a man walk on it because
A. There is no fraction
B. The ice surface is smooth
C. The increase of pressure causes it to melt
D. It is chilled

31. Thermodynamic is the study of the relationship between
A. Heat and gas
B. Heat and liquid
C. Heat and another form of energy
D. Heat and solid
E. None of these

32. Which of the following is a close system
A. The energy of the system remains constant
B. The mass of the system remains constant
C. Both A and B
D. None of these

33. What is Angular Momentum of body under a central force?
A. Constant
B. Maximum
C. Minimum
D. Zero
E. None of these

34. Moment of inertia depends upon
A. Angular momentum
B. Mass of body and its radius
C. Mass as well as Distribution
D. Mass of body and its angular speed

35. The product of these mass ‘m‘ OF the rotating body and the square of the radius of gyration is called?
A. Torque
B. Moment of inertia
C. Angular momentum
D. The inertia of the body
E. None of these

36. Which of the following is also called as
A. Metacenter
B. Center of mass
C. Center of buoyancy
D. Center of body
E. None of these

37. Artificial gravity is provided to the space_ship by
A. Accelerating it
B. Rotating it around its axis
C. Moving with greater speed
D. Moving slowly
E. None of these

38. For what purpose, geostationary satellites are used?
A. Weather observation
B. Navigation
C. World Communication
D. All of the above
E. None of these

39. With rising of temperature Viscosity of gases
A. Increase
B. Decrease
C. Remain the same
D. All of these
E. None of these

40. Atmospheric pressure effect due to
A. Increase with altitude above the sea level
B. Decrease with altitude above the sea level
C. Neither increase nor decrease with altitude
D. All of these
E. None of these

42. Which of the following is more viscous?
A. Water
B. Honey
C. Coal tar
D. Kerosene oil
E. None of these

43. The smooth and steady flow of fluid is known as
A. Turbulent Flow
B. Laminar Flow
C. Simple flow
D. Regular flow
E. None of these

44. The streamlines for an ideal fluid are?
A. Antiparallel
B. Parallel
C. Perpendicular
D. Intersect
E. None of these

45. Number of vibration per second is called
A. Time period
B. Amplitude
C. Frequency
D. Revolution
E. None of these

46. IN S.H.M, the velocity of a particle is maximum at
A. Extreme Position
B. Mean position
C. The middle between mean and extreme on the right side
D. The middle between mean and extreme on the left side
E. None of these

47. The stationary wave consists of
A. Nodes and antinodes
B. Crest and troughs
C. Compression and rarefaction
D. Reflection and refraction
E. None of these

48. in transverse waves individual particles of the medium
A. move in ellipses
B. move in circle
C. move perpendiuclar to the direction of trivel
D. move paralle to the direction of travel
E. none of these

50. the sound wave in the air is
A. Transeverse wave
B. longtitutnal wave
C. Electromagnatic wave
D. Matter wave
E. None of these

Topic Covered: 

Physics notes for class 12 – MCQs.