Alternating Current — Physics STD 12 Science — Question

Work done by an external force in bringing a unit positive charge from infinity to a point is called as:

In Geiger-Marsden scattering experiment, the trajectory traced by an a-particle depends on:

What should be the shape of a conductor that can hold a charge for long?

An electron enters a magnetic field whose direction is perpendicular to the velocity of the electron. Then

(a) The speed of the electron will increase

(b) The speed of the electron will decrease

(c) The speed of the electron will remain the same

(d) The velocity of the electron will remain the same

The electric potential (V) inside a uniformly charged. spherical shell depends on distance:

The direction of induced current in the loop abc is:

The product of resistivity and conductivity of a cylindrical conductor depends on:

In electromagnetic induction, the induced charge in a coil is independent of

(a) Change in the flux	(b) Time
(c) Resistance in the circuit	(d) None of the above

If  is the intensity of the principal maximum in the single slit diffraction pattern, then what will be its intensity when the slit width is doubled

(a)

(b)

(c) 2

(d) 4

A thin transparent sheet is placed in front of a Young's double slit. The fringe-width will:

1. Increase.
2. Decrease.
3. Remain same.
4. Become nonuniform.