Electromagnetic Induction — Physics STD 12 Science — Question

The polarising angle of a medium is 60°. What is the refractive index of the medium?

Define dispersion of colours.

Write the name of the electromagnetic wave that is used to study crystal structure of solids.

If the speed of a particle moving. at a relativistic speed is doubled, its linear momentum will:

1. Become double.
2. Become more than double.
3. Remain equal.
4. Become leas than double.

Answer the following question:
When a tiny circular obstacle is placed in the path of light from a distant source, a bright spot is seen at the centre of the shadow of the obstacle. Explain why?

Answer the following questions, which help you understand the difference between Thomson’s model and Rutherford’s model better.
Is the probability of backward scattering (i.e., scattering of α-particles at angles greater than 90°) predicted by Thomson’s model much less, about the same, or much greater than that predicted by Rutherford’s model?

What is the effect on specific conductance of any electrolyte with increase in temperature?

Can alternating current cause electrolysis?

Write the values of kinetic energy ( K ) and potential energy (U) of hydrogen atom.