41.Which of the following is not a fundamental quantity in physics?
- A. Amount of substance
- B. Electric voltage
- C. luminous intensity
- D. Time
42.On a velocity time graph, a straight line drawn parallel to the time axis represents
- A. uniform velocity
- B. uniform acceleration
- C. uniform acceleration
- D. uniform displacement
43.For a body performing uniforn circular motion, its
- A. speed is uniform
- B. acceleration is centrifugal
- C. force is restoring
- D. displacement is constant
44.At what temperature do the Fahrenheit and Kelvin scales have the same numerical value?
- A. 120
- B. -40
- C. 574.25
- D. 40
45.An astronaut experience weightlessness in space when he
- A. does not hold anything mile in space
- B. is midway between the sun and the earth
- C. is free from the earth gravitational field
- D. is walking on the moon
46.The friction which operates when solid surface slides over another is called
- A. Solid friction
- B. Static friction
- C. Limiting friction
- D. Dynamic friction
47.Which of the following conclusion can be drawn from Newton second law of motion?
- A. Force is proportional to acceleration
- B. Force is proportional to extension
- C. Force is proportional to the product of mass and velocity
- D. Force is proportional to the product of pressure and areas
48.In which of the following transitions does a solid changes directly into gases? I. fusion II. condensation III. sublimation IV. solidification
- A. I
- B. II
- C. III
- D. I and II
49.If M and R are the masses and radius of the earth respectively and G is the universal gravitational constant, the earth gravitational potential at an altitude H above the ground level is
- A. –GM/R
- B. –GM/(R+H)
- C. –GM /2H
- D. –GM/(R-H)
50.An electric kettle with negligible heat capacity is rated at 2000 W. If 2.0kg of water is put in it how long will it take temperature of water to rise from 20⁰ to 100⁰C. (S.H.C of water = 4200 J Kg⁻¹ k⁻¹)
- A. 336s
- B. 420s
- C. 168s
- D. 84s
51.The tendency of a body to remain `at the state of rest when a force is applied to it is called
- A. impulse
- B. momentum
- C. inertia
- D. motion
52.A nail is pulled from a wall with a string tied to the nail tied to the nail. If the string is inclined at an angle of 30⁰ to the wall and the tension in the string is 50N, the effective force used in pulling the nail is
- A. 25N
- B. 25√3 N
- C. 50N
- D. 50√3N
53.Under constant tension and constant mass per unit length, the note produced by a plucked string is 500Hz when the length of the string is 0.90 m, at what length is the frequency 150Hz
54.Two bodies P and Q are projected on the same horizontal plane, with the same initial speed but at different angles of 30⁰ and 60⁰ respectively to the horizontal neglecting air resistance, what is the ratio of range of P to that of Q?
- A. 1:1
- B. 1:√3
- C. √3:1
- D. 1:2
55.A smooth steel ball is dropped from height of 3.0m. How long does it takes to fall 3.0m if it is released from rest?
- A. 0.61s
- B. 0.66s
- C. 0.785
- D. 0.81s
56.A gas would serve as an electrical conductor under
- A. reduced pressure and high current
- B. increased magnetic field
- C. reduced pressure and reduced potential difference
- D. exposure to visible light
57.A stationary stone at a height of xcm above the ground possess one of the following types of energy.
- A. potential energy
- B. stationary energy
- C. vibrational energy
- D. mechanical energy
58.Which of the following types of waves cannot travels through a vacuum?
- A. sound waves
- B. light waves
- C. infra-red waves
- D. X-rays
59.When a jar containing a certain gas is opened, the motion of the escaping gas is
- A. translational
- B. random
- C. rectilinear
- D. circular
60.I. Low pressure II. High pressure III. High p.d IV. Low p.d. Which of the combination of the above is true of the conduction of electricity through gases?
- A. I and IV only
- B. I and III only
- C. II and III only
- D. II and III only