A body weighs 200 N on the surface of the
earth. How much will it weigh half way down
to the centre of the earth ?
(1) 150 N
(2) 200 N
(3) 250 N
(4) 100 N

Six similar bulbs are connected as shown in
the figure with a DC source of emf E and zero
internal resistance.

The ratio of power consumption by the bulbs
when
(i ) all are glowing and
(ii) in the situation
when two from section A and one from section
B are glowing, will be :
(1) 4 : 9
(2) 9 : 4
(3) 1 : 2
(4) 2 : 1

For a p-type semiconductor, which of the
following statements is true ?
(1) Electrons are the majority carriers and
trivalent atoms are the dopants.
(2) Holes are the majority carriers and
trivalent atoms are the dopants.
(3) Holes are the majority carriers and
pentavalent atoms are the dopants.
(4) Electrons are the majority carriers and
pentavalent atoms are the dopants.

Average velocity of a particle executing SHM in
one complete vibration is :
(1)``\frac{ωA}{2}``
(2) Aω
(3)``\frac{ω2A}{2}``
(4) Zero

The unit of thermal conductivity is :
(1) ``J m K^{-1}``
(2) ``J m^{-1} K^{-1}``
(3) ``W m K^{-1}``
(4) ``W m^{-1} K^{-1}``

A solid cylinder of mass 2 kg and radius 4 cm
rotating about its axis at the rate of 3 rpm.
The torque required to stop after 2
revolutions is
(1) ``2 × 10^{{-6}}`` N m
(2) ``2 × 10^{-3}`` N m
(3) ``12 × 10^{-4}`` N m
(4) ``2 × 10^6`` N m

A force F = 20 + 10 y acts on a particle in y-
direction where F is in newton and y in meter.
Work done by this force to move the particle
from y = 0 to y = 1 m is
(1) 30 J
(2) 5 J
(3) 25 J
(4) 20 J

Which of the following acts as a circuit
protecting device?
(1) Conductor
(2) Inductor
(3) Switch
(4) Fuse

In the circuits shown below, the readings of
voltmeters and the ammeters will be

Circuit 2
(1) ``V_2 > V_1 `` and `` i_1 = i_2``
(2) ``V_2 = V_1 `` and ``i_1 > i_2``
(3) ``V_2 = V_1`` and ``i_1 = i_2``
(4) ``V_2 > V_1`` and ``i_1 > i_2``

A hollow metal sphere of radius R is uniformly
charged. The electric field due to the sphere
at a distance r from the centre
(1) Increases as r increases for `` r < R`` and for
``r > R``
(2) Zero as r increases for `` r < R``, decreases as
r increases for `` r > R``
(3) Zero as r increases for `` r < R``, increases as
r increases for ``r > R``
(4) Decreases as r increases for `` r < R`` and for
``r > R``

At a point A on the earth’s surface the
angle of dip, ``δ`` = +25°. At a point
B on the earth’s surface the angle of dip, ``δ``
= -25°. We can interpret that:
(1) A and B are both located in the northern
hemisphere.
(2) A is located in the southern hemisphere
and B is located in the northern
hemisphere.
(3) A is located in the northern hemisphere
and B is located in the southern
hemisphere.
(4) A and B are both located in the southern
hemisphere.

The total energy of an electron in an atom in
an orbit is -3.4 eV. Its kinetic and potential
energies are, respectively:
(1) -3.4 eV, -3.4 eV
(2) -3.4 eV, -6.8 eV
(3) 3.4 eV, -6.8 eV
(4) 3.4 eV, 3.4 eV

In total internal reflection when the angle of
incidence is equal to the critical angle for the
pair of media in contact, what will be angle of
refraction?
(1) 180°
(2) 0°
(3) Equal to angle of incidence
(4) 90°

The work done to raise a mass m from the
surface of the earth to a height h, which is
equal to the radius of the earth, is:
(1) mgR
(2) 2mgR
(3) ½mgR
(4)``\frac32``mgR

When an object is shot from the bottom of a
long smooth inclined plane kept at an angle 60°
with horizontal, it can travel a distance ``x_1``
along the plane. But when the inclination is
decreased to 30° and the same object is shot
with the same velocity, it can travel ``x_2``
distance. Then ``x_1 : x_2`` will be:
(1) 1 : ``\sqrt2``
(2) ``\sqrt2`` : 1
(3) 1 : ``\sqrt3``
(4) 1 : 2``\sqrt3``