Physics one-liners for various competitive examinations- May 13
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1- When a body is raised upwards from the Surface of the earth, the impact of its weight shall
(D) remain the same.
2- The kinetic energy in simple harmonic motion
(A) Is never zero
(B) Becomes zero twice in every period
(C) Is zero in the mean position
(D) Is always constant
3- Which among the following is an example of a scalar quantity
4- The number of images formed will be – when an object is placed between two parallel mirrors.
5- Due to this effect, a piece of cotton cloth gets wet if one end of it is dipped in water in a glass.
6- Why a balloon filled with hydrogen bursts on reaching high altitude? Because-
(A) The pressure inside the balloon becomes less
(B) The pressure inside the balloon becomes more
(C) The surface of the balloon gets melted
(D) It is a natural phenomenon
7- The minimum distance between an object and its real image in a convex lens is
(A) Equal to 4f
(B) More than 4f
(C) Equal to 2f
(D) Less than 4f.
8- Why the ink of pen leaks in an airplane?- Because
(A) The pressure of ink inside is more than the outside pressure.
(B) Atmospheric pressure increases
(C) Temperature difference
(D) High speed of the airplane.
9- On what principle, the Hydrogen Bomb is based on?
(A) Nuclear fission
(B) Nuclear explosion
(C) Nuclear fusion
(D) None of the above.
10- On what factors below, the emf of a cell does not depend on?
(A) Electrolyte used
(B) The material of the anode
(C) The material of the cathode
(D) The size of the cell
11- The ship entering the sea from a river floats up because
(A) Seawater is warmer
(B) The density of the river water is greater
(C) Saltwater of the sea is denser
(D) The speed of the ship on the sea is greater.
12- The hydraulic breaks is a direct application of –
(B) Pascal’s law
(C) Torricelli law
(D) Bernoulli’s theorem
13- What type of work is performed by hand when a body is lifted by hand?
(A) Simple machine
(B) The third type of lever
(C) The second type of lever
(D) The first type of lever
14- Joule-Thomson effect in case of an ideal gas is
15- Which among the following is the only vector quantity?
(A) Electric charges
(B) Electric potential
(C) Electric field intensity
(D) Electric resistance
2- Becomes zero twice in every period.
6-The pressure inside the balloon becomes more.
7- Equal to 2f.
8-The pressure of ink inside is more than the outside pressure.
10- The size of the cell.
11-Saltwater of the sea is denser
13- Third type of lever.
15-Electric field intensity.
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