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**Physics First Year: Full Course Test:
Total MCQs: 100
Total Duration: 100 Minutes**

**Chapters Included
➡Force and Motion
➡Work and Energy
➡Rotational & Circular Motion
➡Oscillation
➡Waves
➡Thermodynamics**

Physics First Year Full Course Test

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1 / 100

1. work done is conservative when

2 / 100

2. **A fork of frequency 256 Hz resonates with a closed organ ****pipe of length 25.4 cm. If the length of pipe be increased by ****2 mm, the number of beats/sec. will be**

3 / 100

3. One complete round trip of a vibrating body called

4 / 100

4. **Which of the following formula is wrong?**

5 / 100

5. **When a ball is thrown vertically upwards, which of the following quantities remains constant during its motion?**

6 / 100

6. **Longitudinal**** waves do not exhibit:**

7 / 100

7. impulse-momentum relationship related to Newton's

8 / 100

8. **A particle moves in a circle of radius 25 cm at 2 revolutions per second. The acceleration of the particle in _______ $π^_{2}m/s_{2}$**

9 / 100

9. **A particle moves in a circular path, 0.4 m in radius, with constant speed. If particle makes 5 revolutions in each second of its motion, the speed of the particle is**

10 / 100

10. **A belt passes over a wheel of radius 25 cm. If a point on the belt has a speed of 5m/s, the belt is moving with an angular velocity of**

11 / 100

11. The time period of the same pendulum at Karachi and Murre related as

12 / 100

12. A body is traveling in a circle at constant speed. It

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13. **A body of mass 10 kg moves with a velocity v of 2 m/s along a circular path of radius 8 m. The power produced by the body will be**

14 / 100

14. The S.I unit of spring constant is

15 / 100

15. **If vibrations of a string are to be increased by a factor of ****two, then tension in the string must be made**

16 / 100

16. **A point on P – V diagram represents**

17 / 100

17. tall buildings are characterized by _________ natural frequency so that they can vibrate significantly under lateral dynamic earth quake

18 / 100

18. ** In which terms expressed hotness or coldness of an object:**

19 / 100

19. **Which of the following statement is false for motion with uniform velocity**

20 / 100

20. **If a wave is generated in a string and it is reflected by a rigid boundary, then the resultant displacement at all time at the boundary is equal to:**

21 / 100

21. Which of the following is true?

22 / 100

22. **Standing waves can be produced:**

23 / 100

23. **A man is watching two trains, one leaving and the other ****coming in with equal speeds of 4m/sec. If they sound their ****whistles, each of frequency 240 Hz, the number of beats ****heard by the man (velocity of sound in air = 320 m/sec) will ****be equal to**

24 / 100

24. Assume we can change the equilibrium state of a system via two different processes. Assume that the initial and the final state are the same. Which of the quantities ∆U, ∆Q, ∆W, and ∆T must be the same for the two processes?

25 / 100

25. Distance ≥ displacement

26 / 100

26. **In the longitudinal waves the direction of vibration in medium of particle is**

27 / 100

27. What is the ratio of potential energy to kinetic energy of a body executing simple harmonic motion when the displacement is equal to one-third of the amplitude?

28 / 100

**A heater is marked 1000 W. The energy consumed by it in ten hours is**

29 / 100

## 29. **A stationary wave of frequency 200Hz are formed in air. If the velocity of the wave is 360m/ s, the shortest distance between two antinodes is…………..m **

30 / 100

Fahad Safi dropped a 2kg ball from Minare-Pakinstan. If the ball takes four seconds to hit the ground, what is the height from which the ball was dropped?

31 / 100

31. **Which of the following parameters does not characterize**

**the thermodynamic state of matter?**

32 / 100

32. A ball is thrown vertically upwards at 19.6 m/s. For its complete trip up and back down to the starting position), its average speed is:

33 / 100

33. A sound source with a frequency of 450Hz moves away from a stationary observer at a rate of 110m/s. What frequency does the observer hear? The speed of sound is 340m/s.

34 / 100

34. According to first law of thermodynamics,

35 / 100

35. **The vector relation between linear velocity v angular velocity ω and radius vector r is given by**

36 / 100

36. In any process the maximum amount of mechanical energy that can be converted to heat

37 / 100

37. **A cyclist turns around a curve at 15 miles/hour. If he turns at double the speed the tendency to overturn is**

38 / 100

38. **A cycle tyre bursts suddenly. What is the type of this process?**

39 / 100

39. **Which of the following can be zero when the particle is in motion for some time?**

40 / 100

40. **If a shell fired from a cannon, explodes in mid air, then**

41 / 100

41. **Direction of waves is perpendicular to the direction of vibration in**

42 / 100

42. Through which law of motion we measure the force

43 / 100

43. **In which process, the change in internal energy of the system is equal to work done on the system or by the system**

44 / 100

44. **The basic principle of beats is:**

45 / 100

**A constant force is applied on a $10kg$ mass at rest. The ratio of works done in $1st,2nd$ and $3rd$ seconds is **

46 / 100

46. The work done by a centripetal force on an object moving in a circle at constant speed is ________

47 / 100

47. In reversible process the entropy of system:

48 / 100

48. a particle comes round a circle of radius 1m once .the time taken by it is 10 s . the average velocity of motion

49 / 100

49. Distance covered by a body in one vibration is 20cm. The amplitude of the vibration will be

50 / 100

50. **Select One With maximum inertia? **

51 / 100

51. **A small body is projected in a direction inclined at 45º to the horizontal with kinetic energy K. At the top of its flight, its kinetic energy will be**

52 / 100

52. If 5 bullets each of mass 3 Kg and velocity 2 m/s (per second) are fired from a gun then the average force acting on the gun is

53 / 100

53. the angle θ=ω t specifies

54 / 100

54. **An observer is moving towards a stationary source of frequency 250 Hz with a velocity of 40 m/s. If the velocity of sound is 330 m/s, the apparent frequency heard by the observer will be:**

55 / 100

55. **Doppler's effect in sound takes place when source and ****observer are**

56 / 100

56. **During isothermal expansion, the slope of P-V graph**

57 / 100

57. the mass at the end of the spring vibrates up and down with a frequency of 0 Hz and an amplitude of 5cm what is its displacement 2.56s after it reaches a maximum

58 / 100

**if The angular displacement of a second hand of a clock in $15$s in SI unit is **

59 / 100

59. ** What kind of wave is formed in organ pipes?**

60 / 100

60. **"Whenever two (or more) waves travel through the same medium at the same time, the net displacement of the medium at any point in space or time, is simply the sum of the individual wave displacements." This statement is the principle ____________.**

61 / 100

61. Two objects, one of mass, m, and the other of mass, 2m, are traveling at constant velocity along a frictionless surface. The lighter object travels at 10m/s, while the heavier travels at 5m/s. An opposing horizontal force acts upon both objects equally, and brings them to rest. Which object takes longer to slow down, and why?

62 / 100

62. **Gradient of line of velocity-time graph is tells us the**

63 / 100

63. Mechanical waves transmit

64 / 100

64. If a simple pendulum is suspended from the roof of a compartment of a train moving down an inclined plane of inclination Θ, then the time period of oscillation is

65 / 100

65. **The fundamental frequency of an organ pipe is 512 Hz. If its length is increased, then frequency will**

66 / 100

What will be the path of projectile when we see it from another projectile?

67 / 100

67. **Which of the following is a state variable ?**

68 / 100

68. **A wave is made up of**

69 / 100

70 / 100

70. Tuning of a radio set is an example of

71 / 100

71. Which of a following is a characteristic of an isothermal change?

72 / 100

72. If you throw a ball downward, then its acceleration immediately after leaving your hand, assuming no air resistance, is

73 / 100

73. a wheel of radius 50 cm having an angular speed of 5rad s-1 have linear speed

74 / 100

74. **Which of these quantities is constant in uniform circular motion?**

75 / 100

75. **For a given musical instrument frequency of nth overtone depends upon ________.**

76 / 100

76. **The angular velocity of a particle rotating in a circular orbit 100 times per minute is**

77 / 100

# 77. Work done by spring force depends on _______.

78 / 100

**A container is lifted with a height of 8 m and a mass of 5 kg. How much work must be done by a gravitational and external force?**

79 / 100

79. An electric motor exerts a force of 40 N on a cable and pulls it by a distance of 30 m in one minute. The power supplied by the motor (in Watts) is

80 / 100

80. If a body is thrown vertically up with a velocity 10 m/s in the uniform gravitational field then Maximum height is (g=10)

81 / 100

81. **Maximum number of beats frequency heard by a human ****being is**

82 / 100

82. A 10g super ball is dropped from a height of 2m and returns to the same height. Determine the work done by the ground on the ball.

83 / 100

83. While deriving the equation of time period for simple pendulum which quantity should be kept small:

84 / 100

84. ** What is thermodynamics?**

85 / 100

85. A particle is performing a U.C.M. Which is the wrong statement regarding its motion?

86 / 100

86. The angular analogue of linear displacement is called

87 / 100

87. **The angular displacement in circular motion is**

88 / 100

88. **Frequencies of sound produced from an organ pipe open at ****both ends are**

89 / 100

89. if two spring of spring constant K1 and K2 connected in series then Ks will be

90 / 100

90. the concept of damping is used in

91 / 100

91. The time period of a simple pendulum of infinite length is (R= radius of earth).

92 / 100

92. **Which of the following is incorrect regarding first law of**

**thermodynamics?**

93 / 100

93. **when we shake a carpet dust remove from it, which law of motion describe this**

94 / 100

94. **An rod of 1500W is used 3 hours per day for heating water. Find the electricity bill for 30 days if price of 1 unit is Rs.5.00.**

95 / 100

A cannon ball is fired at an angle of 45 degrees from the horizontal. Which of the following describes the kind of motion experienced by the cannon ball in the y-axis and the x-axis respectively?

96 / 100

96. **A particular system gains 200 kJ of heat, and results in a change in internal energy of 129 kJ. Calculate the work done.**

97 / 100

97. **The equation y = A sin ^{2}(kx – wt) represents a wave with**

98 / 100

98. **For a gas with n degree of freedom, what will be the value of Cp / Cv**

99 / 100

99. which of the following statements is false for a particle moving in a circle with a constant angular speed

100 / 100

100. If the initial Phase is π/2 then displacement of SHO is

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The average score is 12%