Q.1
The sky appears blue because of
Q.2
The law of conservation of energy states that
Q.3
What property of matter is momentum related to?
Q.4
The swing of a spinning cricket ball in air can be explained on the basis of
Q.5
A rubber ball is dropped from a height of 2 metres. To what height will it rise if there is no loss of energy/velocity after rebounding ?
Q.6
A piece of paper and a cricket ball are dropped from the same height. Under which of the following conditions do both reach the surface simultaneously ?
Q.7
Two stones of unequal masses are thrown vertically up with the same velocity. Which of the following will happen?
Q.8
The dimension of which of the following is the same as that of impulse ?
Q.9
The dimension MLT–2 corresponds to
Q.10
If lift is going up with acceleration, the apparent weight of a body is
Q.11
Dynamo is a device for converting
Q.12
The force that keeps a body in a circular motion called
Q.13
It is easier to carry two buckets of water in one hand each, than to carry only one in one hand because
Q.14
If an electron and a photon have the same wavelength, then they will have the same
Q.15
When the Sun is near the horizon during the morning or evening, it appears reddish. The phenomenon that is responsible for this observation is
Q.16
Which combination of colour is the most convenient during day and night time ?
Q.17
During washing of clothes, we use indigo due to its
Q.18
Which colour has the highest frequency?
Q.19
Light scattering takes place in
Q.20
A hunter on the ground wishes to shoot a bird on a tree at a distance with his rifle. He has to point the rifle
Q.21
What will happen if an object is dropped from a height and there is no air resistance?
Q.22
Angle of friction and angle of repose are
Q.23
The term ''Higgs Boson' is associated with
Q.24
An object covers distance which is directly proportional to the square of the time. Its accelaration is
Q.25
A bullet of mass 10gm is fired with a velocity of 40 m/s from a gun of mass 8 kg. Find the recoil velocity (in m/s) of the gun.
Q.26
A man stands on the pan of a balance holding a fish in his right hand and bucket of water in his left hand. If he transfers the fish into the bucket, the total weight on the pan
Q.27
The force that generates wind is
Q.28
When all the forces and torques are balanced in a mechanical body it is said to be in
Q.29
Centrifugal force increases with
Q.30
A disk and a sphere of same radius but different masses roll on two inclined planes of the same altitude and length. Which one of the two objects gets to the bottom of the plane first ?
Q.31
The washing machine works on the principle of
Q.32
The working of a rocket is based on the principle of:
Q.33
A bomb at rest explodes into a large number of tiny fragments. The total momentum of all the fragments
Q.34
A ball is thrown vertically upward from the ground. It crosses a point at the height of 25 m twice at an interval of 4 seconds. The ball was thrown with the velocity of
Q.35
The point where total mass of a body is supposed to be concentrated is known as
Q.36
The angle in which a cricket ball should be hit to travel maximum horizontal distance is :
Q.37
Rain drops fall from great height. Which among the following statements is true regarding it?
Q.38
The splitting of different colours of light in a prism is :
Q.39
A boy is swinging a ball attached to a string in a horizontal circle. If the string snaps
Q.40
A body moving in a circular path with a constant speed has a
Q.41
What is the direction of torque?
Q.42
Ball pen functions on the principle of :
Q.43
What is the SI unit of Power?
Q.44
A boy sitting in a train moving with a uniform velocity drops a coin outside. A man standing outside the train will find the trajectory of the coin to be
Q.45
The minimum number of forces to keep a particle in equilibrium is
Q.46
When milk is churned, the cream separates from it due to:
Q.47
When an unbalanced force acts on an object
Q.48
What type of force acts on a car moving around a curve?
Q.49
What factors contribute to global winds?
Q.50
Tensional forces normally cause which one of the following?
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