The unit for electric susceptibility is

(a)

Nm² C^-2

(b)

C² N^-1 m^-2

(c)

C^-2Nm²

(d)

N^-1 m^-2C²

In an electrical arrangement as shown the equivalent resistance between X and Y will be

(a)

\(158.75\Omega \)

(b)

\(118.75\Omega \)

(c)

\(218.75\Omega \)

(d)

\(318.75\Omega \)

Parts of the energy is used in an electric motor and the remaining part of the energy is dissipated in form of _____________.

(a)

current in the resistors

(b)

heat in the resistor

(c)

voltage in the resistors

(d)

resistance in the resistor

The magnitude of the induced emf in a conductor depends on the _______________.

(a)

flux density of the magnetic field

(b)

amount of flux cut

(c)

amount of flux linkages

(d)

rate of change of flux

Speed of electromagnetic waves through vacuum is equal to ______________.

(a)

\(\sqrt { { \mu }_{ 0 }{ \varepsilon }_{ 0 } } \)

(b)

\(\frac { 1 }{ \sqrt { { \mu }_{ 0 }{ \varepsilon }_{ 0 } } } \)

(c)

\(\\ \frac { \sqrt { { \mu }_{ 0 } } }{ { \varepsilon }_{ 0 } } \)

(d)

\(\sqrt { \frac { { \varepsilon }_{ 0 } }{ { \mu }_{ 0 } } } \)

A ray of light travels from A to B with uniform speed. On its way, it is reflected by the surface XX'. The path followed by the ray to take least time is ____________.
 

(a)

1

(b)

2

(c)

3

(d)

4

According to Einstein's photoelectric equation the plot of the K.E of the emitted photoelectrons from a metal vs the frequency of incident radiation gives a straight line where slope ____________.

(a)

depends on the nature of the metal used

(b)

depends on the intensity of the radiation

(c)

both a & b

(d)

Depends on neither a or b

The number of de Broglie waves of an electron in the nth orbit of an atom is ___________.

(a)

n

(b)

n-1

(c)

n+1

(d)

2n

In Millikan's oil drop experiment, charged drop is balanced between the two plates. Now the viscous force _______________.

(a)

acts downwards

(b)

acts upwards

(c)

is zero

(d)

acts either upwards or downwards

A p-n diode can be used as _______________.

(a)

condenser

(b)

amplifier

(c)

rectifier

(d)

regulator