The concept of 'Field' was introduced by ___________

(a)

Faraday

(b)

Gauss

(c)

Maxwell

(d)

None

A condenser is charged to a potential of 200V and has a charge of 0.1C. The energy stored in it is _____________

(a)

1 J

(b)

2 J

(c)

10 J

(d)

20 J

If the specific resistance of a potentiometer wire is 10^-7 Om and current flowing through it is 0.1 amp, cross-sectional area of wire is 10^-6 m², then potential gradient will be ________________.

(a)

10^-2 v/m

(b)

10^-4 v/m

(c)

10^-6 v/m

(d)

10^-8v/m

Which of the following is an identical?

(a)

germanium, silicon

(b)

silver, wood

(c)

aluminum, constantan

(d)

bakelite, iron

The resistance of the wire varies inversely as _________________.

(a)

area of cross section

(b)

resistivity

(c)

length

(d)

temperature

The most suitable metal for permanent magnet is ______________.

(a)

copper

(b)

aluminium

(c)

steel

(d)

iron

The expression for water equivalent is _____________.

(a)

W = H (θ₂,θ₁)

(b)

W = \(\frac { { \theta }_{ 2 }-{ \theta }_{ 1 } }{ H } \)

(c)

both (a) and (b)

(d)

W = \(\frac { H }{ { \theta }_{ 2 }-{ \theta }_{ 1 } } \)

The direction of magnetic dipole moment is ______

(a)

from South pole to North pole

(b)

from North to South pole

(c)

from East to West

(d)

from West to East

Which current- time graph represents the steady movement of short magnet through a coil XY?

(a)

(b)

(c)

(d)

If the frequency of light in a photo electron experiment is doubled the stopping potential will ______________.

(a)

be doubled

(b)

be halved

(c)

become more than double

(d)

become less than double.