Electric Charges and Fields — Physics STD 12 Science — Question

What direction does the line perpendicular to the wave front express?

When unpolarised light from air, passes through transparent medium, in which direction will the reflected light be polarized?

Can there be a potential difference between two conductors of equal volume, even though both have the same positive charge?

Can simple harmonic motion take place in a noninertial frame? If yes, should the ratio of the force applied with the displacement be constant?

Define the term 'electrical conductivity' of a metallic wire. Write its S.I unit.

A simple pendulum is a point mass suspended by a light thread from a fixed point. The particle is displaced towards one side and then released. It makes small oscillations. Is the motion of such a simple pendulum a pure rotation? If yes, where is the axis of rotation?

What is the static-electric potential due to an electric dipole at an intermediate point?

Why, some definite lines of atomic spectrum of matter is obtained?

A barometer tube reads 76cm of mercury. If the tube is gradually inclined keeping the open end immersed in the mercury reservoir, will the length of mercury column be 76cm, more than 76cm or less than 76cm?

Suppose a charged particle moves with a velocity v near a wire carrying an electric current. A magnetic force, therefore, acts on it. If the same particle is seen from a frame moving with velocity v in the same direction, the charge will be found at rest. Will the magnetic force become zero in this frame? Will the magnetic field become zero in this frame?