List of practice Questions

Stars twinkle due to :
Which of the following terms does not represent electric power in a circuit ?
The device used for measuring potential difference is known as :
Ammeter is used in a circuit in :
Joule/Coulomb represents :
The refractive indices of water, glass, kerosene and diamond are 1.33, 1.5, 1.44 and 2.42. In which medium the speed of light is least ?
Two thin lenses of power +3.5 D and -2.5 D are placed in contact. Find the focal length of the lens combination ?
Hypermetropia can be corrected by using :
Image in human eye is formed at :
Very big particles scatter :
The far point of a normal eye is :
A bulb of 60 watt runs for 50 hours. How much electrical energy is consumed ?
In domestic circuit the colour of neutral wire is :
The mirror used as shaving mirror is :
When the object is placed at 2F (centre of curvature) in front of a concave mirror then its image is formed at :
An object is placed at a distance of 10 cm from a convex mirror of radius of curvature 30 cm. Where is the position of the image ?
A mirror always forms virtual and diminished image it is a :
Convex lens forms the image of Sun at :
Which of the following waves do not require any kind of medium to propagate ?
Two objects of masses 1 kg and 3 kg have equal momentum. What is the ratio of their kinetic energies ?
1 kWh = _____.
Heating effect of current is used in :
Inside a solenoid the magnetic field is :
Material used for making a fuse wire must have :
How does the force of gravitation between two objects change when the distance between them is reduced to half ?