Atoms — Physics STD 12 Science — Question

What will be the path of a charged particle moving along the direction of a uniform magnetic field?

Can a metal sphere of radius one meter be given a charge of 1 coulomb?

How many types of nuclear chain reactions are? Write the name of each.

As the temperature of a conductor increases, both its resistivity as well as conductivity change. Will the ratio of its resistivity and conductivity increase, decrease or remain the same.

Does the positive or negative electric potential depend on the nature of the test charge? explain.

Write two uses of shunt.

Answer the following questions, which help you understand the difference between Thomson’s model and Rutherford’s model better.Keeping other factors fixed, it is found experimentally that for small thickness t, the number of α-particles scattered at moderate angles is proportional to t. What clue does this linear dependence on t provide?

A plane electromagnetic wave travels in vacuum along z-direction. What can you say about the direction of electric and magnetic field vectors?

Two converging lenses of unequal focal lengths can be used to reduce the aperture of a parallel beam of light without losing the energy of the light. This increases the intensity. Describe how the converging lenses should be placed to do this.