A 200 kg satellite is revolving around earth in circular orbit of radius 2r. What is the amount of energy... View Article
A block slides down a smooth inclined plane when released from the top,while another falls freely from the same point... View Article
A ship is to reach a place 10° south of west. In what direction should it be steered if declination... View Article
The speed of a wave on a string is 150 m/s when the tension is 120 N. The percentage increase... View Article
If earth suddenly contracts to half its present radius keeping the mass constant, what would be the length of the... View Article
In an electric iron heat produced is same, whether it is connected across an a.c. source or across 30 V... View Article
A wire can be broken by a load of 20 kg-wt. The force required to break wire of same material... View Article
Answer: The normal force acting on an object can be calculated as: N = 0.6 kg × 10 m/s2 =... View Article
From the state of rest a car accelerates while engine supplied constant power p. The velocity of car varies with... View Article
The current i in a coil varies with time as shown in figure. What would the variation of induced emf... View Article
In a young’s double slit experiment d = 1 mm and D = 200 cm. It is found that 9th... View Article
The radius of earth is 6400 km. At what depth below the earth surface does the acceleration due to gravity... View Article
A charged particle moves in a circular orbit of radius r in a uniform magnetic field B0. If the kinetic... View Article
Two infinite wires, separated by distance d1, carry current i0 and 2i0 in opposite directions. The magnitude of the magnetic... View Article
The magnetic field at a distance r from a long wire carrying current i is 0.4 T. The magnetic field... View Article
The dip circle is at 30º with a magnetic meridian. If the apparent dip is 60º, then true dip is... View Article
One mole of an ideal diatomic gas is carried from the state a to state b as shown in figure.... View Article
An alternating voltage e = 200 sin 100 t is applied to a series combination and an inductor of 400... View Article
For what distance ray optics is a good approximation when the aperture is 2 mm wide and wavelength is 200... View Article
For the circuit shown in the figure, the value of resistance R is adjusted such that power dissipated in resistance... View Article
