Physics

Centre of mass for a uniform semi-circular ring will be at (from centre)

If the coefficient of restitution is 0.5, what is the percentage loss of energy on each rebounding of a ball dropped from a height?

The following figure depicts snapshot of a wave travelling in a medium. Which pair of particles are in phase?

The P-V diagram of 4 g of helium gas for a certain process A → B is shown in the figure.  What is the heat given to the gas during the process A → B?

What should be the minimum coefficient of static friction between an inclined plane and the solid cylinder, for which the cylinder does not slip on the inclined plane?

Are there numerical in physics class 11?

The area of cross-section of cylindrical wire increases uniformly from left to right as shown in figure. When steady current flows in the wire, then in the direction of current

The current in a coil changes from 8 A to zero in 0.2 s. If self-inductance is 4 H then average induced emf is:

In Bohr's model of hydrogen atom, which of the following represents the variation of nth orbit radius with n?

An objective lens of a telescope has diameter 200 cm. The limit of resolution of telescope for wavelength 600 nm is nearly