A charged particle of specific charge 0.2 C/kg has velocity of (2i + 3j) at some instant in uniform magnetic field (5i + 2j). What is the... View Article
If the internal resistance of the galvanometers RC<R/2, which of the following statement(s) about any one of the galvanometers is(are) true?... View Article
A 200 kg satellite is revolving around earth in circular orbit of radius 2r. What is the amount of energy that is required to transfer it to a... View Article
A block slides down a smooth inclined plane when released from the top,while another falls freely from the same point Freely falling block will... View Article
The speed of a wave on a string is 150 m/s when the tension is 120 N. The percentage increase in the tension in order to raise the wave speed by... View Article
If earth suddenly contracts to half its present radius keeping the mass constant, what would be the length of the day? If earth suddenly... View Article
In an electric iron heat produced is same, whether it is connected across an a.c. source or across 30 V constant voltage. The rms value of a.c.... View Article
A wire can be broken by a load of 20 kg-wt. The force required to break wire of same material with twice the diameter will be 5 kg-wt 80 kg-wt... View Article
The current i in a coil varies with time as shown in figure. What would the variation of induced emf with the time would look like? Answer: 3.... View Article
In a young’s double slit experiment d = 1 mm and D = 200 cm. It is found that 9th bright fringe is at a distance of 6.5 mm from the 2nd... View Article
The radius of earth is 6400 km. At what depth below the earth surface does the acceleration due to gravity decreases by 2%? 64 km 44 km 10 km... View Article
A charged particle moves in a circular orbit of radius r in a uniform magnetic field B0. If the kinetic energy is doubled and the magnetic field... View Article
Two infinite wires, separated by distance d1, carry current i0 and 2i0 in opposite directions. The magnitude of the magnetic field at a point p... View Article
The magnetic field at a distance r from a long wire carrying current i is 0.4 T. The magnetic field at a distance 2r is 0.8 T 0.2 T 0.16 T... View Article
One mole of an ideal diatomic gas is carried from the state a to state b as shown in figure. What is the change in the internal energy during the... View Article
An alternating voltage e = 200 sin 100 t is applied to a series combination and an inductor of 400 mh and R = 30 Ω. The power factor of the... View Article
