When a lift accelerates upwards, how does the apparent weight of a body inside compare with its true weight?
Correct answer D. More than the true weight
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Physics MCQs
Page 4 of Physics multiple-choice questions with answers. Tap an option to check yourself.
Page 4 of 45
How does the boiling point of a substance change when pressure increases?
Correct answer A. Increases
Which of the following has the highest specific heat capacity?
Correct answer C. Water
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If a substance’s electrical conductivity increases as its temperature rises, what is it?
Correct answer A. Semiconductor
Young’s modulus is a property of which state of matter?
Correct answer B. Solid only
Which material is used for control rods in nuclear fission reactors?
Correct answer A. Cadmium
Which statement about moderators in a nuclear reactor is correct?
Correct answer B. Moderators slow down the neutrons
According to the classical definition, the atom is the smallest particle of matter that is what?
Correct answer C. Indivisible
What does potential energy mean?
Correct answer C. Due to position of object
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A ball is thrown down towards the ground and bounces back up. Which quantities change direction during this motion?
Correct answer A. Direction of displacement and velocity
An object moves at constant speed around a circle of radius 1.0 m, completing one revolution in 2.0 s. What is the magnitude of its acceleration?
Correct answer A. π²
A football is kicked at 45° to the horizontal with kinetic energy E. What is its kinetic energy at the highest point?
Correct answer B. E/2
In which process does the internal energy of a system increase?
Correct answer B. Adiabatic compression
What is the ratio of the speed of sound at 4 atmospheres to its speed at 1 atmosphere?
Correct answer B. 1 : 1
The first overtone of a stretched string of fixed length is 320 Hz. What is its first harmonic?
Correct answer C. 160 Hz
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Two identical metal balls carrying charges +2Q and -Q are a fixed distance apart and exert a force F on each other. They are briefly joined by a conducting wire, which is then removed. What is the new force between them?
Correct answer B. F/8
If one million electrons are added to a pith ball, what is its charge?
Correct answer C. -1.6 × 10⁻¹³ C
A cube with 5 cm sides carries a charge of 6 C. What is the surface charge density?
Correct answer C. 400 C m⁻²
As one electron is brought closer to another, what happens to the electrostatic potential energy of the system?
Correct answer B. Increases
How many electrons per second make up a current of one microampere?
Correct answer A. 6.25 × 10¹² electrons