Author: Study Clue

Polarization of light proves that light is A Longitudinal wave B Transverse wave C Scalar wave D Sound-like wave Explanation

Diffraction of light is more pronounced when A Aperture ≫ wavelength B Aperture ≈ wavelength C Aperture = infinity D

Interference of light occurs due to A Reflection only B Refraction only C Superposition of coherent waves D Diffraction only

The law of reflection states that the angle of incidence equals the angle of A Refraction B Reflection C Deviation

Magnetic force on a current element Idl in a magnetic field is A Idl⋅B B Idl×B C B/I D Zero

The force between two parallel currents is A Always repulsive B Always attractive C Attractive if currents are in same

A current element produces a magnetic field whose magnitude is given by A Ampere’s law B Biot–Savart law C Faraday’s

The magnetic field at a distance r from a long straight current-carrying wire varies as A 1/r² B r C

In electrostatics, the curl of electric field equals A charge density B magnetic flux C zero D potential Explanation Electrostatic

The electric potential satisfies Laplace’s equation in a region when A charges are present B free charge density is zero