Electromagnetic Waves — Physics STD 12 Science — Question

Draw logic symbol of an OR gate and write its truth table.

A capacitor has been charged by a dc source. What are the magnitudes of conduction and displacement currents, when it is fully charged?

What type of semiconductor will be obtained when pure Si crystal is doped with indium (In)?

A string clamped at both ends vibrates in its fundamental mode. Is there any position (except the ends) on the string which can be touched without disturbing the motion? What if the string vibrates in its first overtone?

Do you expect the gas in a cooking gas cylinder to obey the ideal gas equation?

Write the value of the electric potential at the distance r from the centre of the dipole on the axis of the electric dipole of dipole moment p.

If the self-inductance of an iron core inductor increases from 0·01mH to 10mH on introducing the iron core into it, what is the relative permeability of the core material used?

Can electric field at a point be zero, while electric potential is not zero?

For the telescope described in, what is the separation between the objective lens and the eyepiece?

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?