Two planets have masses M and 16 M and their radii are a and 2a, respectively. The separation between the centres of the planets is 10a. A body... View Article
Two identical electric point dipoles have dipole moments p1 = pi and p1 = -pi are held on the x-axis at distance 'a' from each other. When... View Article
Consider the force F on a charge 'q' due to a uniformly charged spherical shell of radius R carrying charge Q distributed uniformly over it.... View Article
Assuming the nitrogen molecule is moving with r.m.s. velocity at 400 K, the de-Broglie wavelength of nitrogen molecule is close to (Given:... View Article
Three rods of identical cross-section and lengths are made of three different materials of thermal conductivity K1, K2 and K3, respectively. They... View Article
When a particle of mass m is attached to a vertical spring of spring constant k and released, its motion is described by y (t) = y0 sin2... View Article
A square loop of side 2a and carrying current I is kept in the xz plane with its centre at the origin. A long wire carrying the same current I is... View Article
A charged particle going around in a circle can be considered to be a current loop. A particle of mass m carrying charge q is moving in a plane... View Article
When a car is at rest, its driver sees raindrops falling on it vertically. When driving the car with speed v, he sees that raindrops are coming... View Article
Particle A of mass m1 moving with velocity (√3i + j) ms-1 collides with another particle B of mass m2 which is at rest initially. Let V1... View Article
A part of a complete circuit is shown in the figure. At some instant, the value of current I is 1A and it is decreasing at a rate of 102 A... View Article
Initially a gas of diatomic molecules are contained in a cylinder of volume V1 at a pressure P1 and temperature 250 K. Assuming that 25% of the... View Article
The density of a solid metal sphere is determined by measuring its mass and its diameter. The maximum error in the density of the sphere is [x /... View Article
Suppose that intensity of a laser is (315 / π) W/m2. The rms electric field, in units of V/m associated with this source is close to the... View Article
Two bodies of the same mass are moving with the same speed, but in different directions in a plane. They have a completely inelastic collision... View Article