List of practice Questions

Stars twinkle due to :
Name the two phenomenon involved in the formation of rainbow :
Unit of electrical current is :
An electric bulb is connected to a 220 V generator. The current is 0.50 A. What is the power of bulb ?
The electric device used for producing electric current is called a :
At the time of short circuit the current in the circuit :
Which of the following materials cannot be used to make a lens ?
S. I. unit of power of lens is :
The angle of incidence of any light passing through the centre of curvature of a spherical mirror is :
Refractive index of water w.r.t. air is 1.33. What is the refractive index of air w.r.t. water ?
The focal length of a convex lens is 18 cm and the size of the image is a quarter of the object. The object is situated at a distance of:
The range of vision of a normal human eye is from :
A particle is moving on a circular path of radius r. Its displacement after one revolution :
In velocity time graph, area under v-t graph represents :
Rocket works on the principle of conservation of :
Force on an object can not change its :
The mass of a goods lorry is 3500 Kg and the mass of goods loaded on it is 1500 Kg. If the lorry is moving with a velocity 10m/s. What will be its momentum ?
SI unit of weight is :
In SONAR, we use :
The velocity of an object becomes double then its kinetic energy will be :
Maximum work is done, when the angle between force and displacement is :
An object of mass 2 Kg is lifted up to height 2 m. The work done will be :
SI unit of gravitational constant (G) is :
Mass of a man is 60 Kg, his mass on the moon will be :
Which of the following distance-time graphs represents an object in uniform motion?