An electron is released from the bottom plate (E = 10⁴ Nc^-1) Find the velocity of the electron when it reaches plate B. (e/m = 1.76 x 10¹¹ Ckg^-1).

Explain the variation of resistivity of conductor and semiconductor with change in temperature.

A potential difference of 3 V is applied across a conductor through which the 5 A of current is flowing. Determine the resistance of the conductor.

Describe the motion of a charged particle in a uniform magnetic field.

Derive an expression for the RMS value of AC.

A parallel plate capacitor is charged by an external ac source straight the displacement current inside the capacitor is the same as the current charging the capacitor.

For the same angle of incidence, the angle of refraction in two media A and Bare 25° and 35° respectively. In which one of the two media is the speed of light lesser?

Explain the production of x-rays.

Write the application of alpha decay in smoke detectors.

The eyepiece and objective of a microscope having focal lengths of 0.03 m and 0.04 m respectively are separated by a distance 0.2 m. Now the eyepiece and the objective are to be interchanged such that the angular magnification of the instrument remains the same. What is the separation between the lenses?