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In Rayleigh scattering, the amount of scattered light is

A) Directly proportional to the square of wavelength

B) Directly proportional to fourth power of the wavelength
C) Inversely proportional to square of wavelength
)

D) Inversely proportional to the fourth power of wavelength

The electric potential V due to an electric dipole varies with distance r from the dipole as
1 1
A) Veet 2) ४०८ ० ५० D) Vat
r
Which of the following quantities does not obey the principle of superposition ?
A) Electric force B) Electrostatic field

C) Electrostatic potential D) Electrostatic energy

A conducting sphere carries a charge Q. The work required to move a charge from
point on the surface to a diametrically opposite point.

A) 15 always zero B) Depends on the charge transported
C) Depends on the radius of the sphere D) Depends on the charge Q

The energy density in a parallel plate capacitor is «. If the distance between the plates
of the capacitor are halved, the energy density becomes

A) 2e B) 4e 0 D)

സ്വന
Alo

A particle A carrying a charge Q and mass 2M and another particle B carrying a
charge 2Q and mass M both enter a magnetic field perpendicular to the field and
move along circular paths of same radii. Then

A) the momentum of A equals that of B
B)
C) the momentum of A is twice that of B
D)

the momentum of A is half that of B

the momentum of A is four times that of B

An electromagnetic crane uses a magnetic field of strength B to lift a metal scrap of
mass m up to a height of h metres. The work done by the magnetic field is

A) Zero B) Bgh ©) 2४ D) mgH
m