Physics PYQs
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Prelims 1999 – 1995 · page 4 of 4Tap an option to check it. For one question at a time, use Start practice above.
A hunter aims his gun at a point between the eyebrows of a monkey sitting on a branch of a tree. Just as he fires, the monkey jumps down. The bullet will
A fuse is used in main electric supply as a safety device.
Which one of the following statements about the fuse is correct?
A ball is dropped from the top of a high building with a constant acceleration of 9.8 m/s².
What will be its velocity after 3 seconds?
Assertion (A): The temperature of a metal wire rises when an electric current is passed through it.
Reason (R): Collision of metal atoms with each other releases heat energy.
The tendency of a liquid drop to contract and occupy minimum area is due to
Which one of the following is a vector quantity?
The working principle of a washing machine is
Which one of the following is paramagnetic in nature?
A smooth inclined plane is inclined at an angle θ with the horizontal as shown in the figure. A body starts from rest and slides down the inclined surface. The time taken by the body to reach the bottom is
A girl is swinging on a swing in sitting position. When the same girl stands up, the period of swing will
When an air bubble at the bottom of a lake rises to the top, it will
When a mirror is rotated by an angle of θ, the reflected ray will rotate by
A truck, a car and a motor cycle have equal kinetic energies. If equal stopping forces are applied and they stop after travelling a distance of x, y and z respectively, then
Total internal reflection can take place when light travels from
Assertion (A): Transformer is useful for stepping up or stepping down voltages.
Reason (R): Transformer is a device used in D.C. circuits.
In the context of the above two statements, which one of the following is correct?
Domestic electrical wiring is basically a
A simple machine helps a person doing
The alpha particle carries two positive charges. Its mass is very nearly equal to that of
Which one of the following can be used to confirm whether drinking water contains a gamma-emitting isotope or not?
The normal temperature of human body on the Kelvin scale is
When the same note is played on a sitar and a flute, the sound produced can be distinguished from each other because of the difference in
Assertion (A): A diamond sparkles more than a glass imitation cut to the same shape.
Reason (R): The refractive index of diamond is less than that of glass.
In the context of the above two statements, which one of the following is correct?
Optical fibre works on the principle of
Suppose a rocketship is receding from the earth at a speed of 2⁄10th the velocity of light. A light in the rocketship appears blue to the passengers on the ship. What colour would it appear to an observer on the earth?
An air bubble in water will act like a