Polystyrene has a relative permittivity of 2.7. If the wave is inciden – McqOptions

MCQOPTIONS

1.	Polystyrene has a relative permittivity of 2.7. If the wave is incident at an angle θi of 30° from air into polystyrene, the angle of transmission will be nearly
A.	0.2°
B.	2°
C.	18°
D.	48°
Answer» D. 48°

Discussion

No Comment Found

Related MCQs

A conductor carries 125 amperes of current under 60° to a magnetic field of 1.1 tesla.The force on the conductor will be nearly
When a dielectric slab is introduced in a parallel plate capacitor, the potential differencebetween plates will
If the sheet of a bakelite is inserted between the plates of an air capacitor, thecapacitance will
The working of a meter is based on the use of a permanent magnet. In order to protectthe meter functioning from stray magnetic fields
at a point may be defined as equal to the lines of force passing normally through a unitcross section at that point.
Three capacitors each of the capacity C are given. The resultant capacity 2/3 Ccan be obtained by using them
Two infinitely long parallel conductors in vacuum anf' separated 1 metre between centres >rhen a current of 1 ampere flows thn. ugh each conductor, produce on each otLer a force of
A coil is wound on iron core which carries current I. The self-induced voltage in the coilis not affected by
The time constant and R-C circuit may also be defined as the time during which thecharging current falls to ______ percent of its initial maximum value,
A coil induces 350 mV when the current changes at the rate of 1 A/s. The value ofinductance is