increases to a great extent
increases slightly
decreases slightly
decreases rapidly
C. decreases slightly
red
violet
green
yellow
it absorbs sun's rays
it reflects sun's rays
it retains the heat inside by the greenhouse effect
it radiates heat better than metals
the forces of cohesion of the molecules within are very much less in them
the forces of cohesion are very large
the forces of adhesion are large
the forces of adhesion are less
white paint is economical
it does not fade off
it does not crack with higher temperature
white coating is a bad conductor of heat and reflects heat rays that fall on it, thus keeping the inside cool
copper
tungsten
mica
nichrome
continue going upwards uninterrupted
reach a particular height and remain floating
burst after reaching some height
reach a particular height and start coming down
Neptune and Pluto
Jupiter and Saturn
Venus and Mars
Venus and Saturn
the sun comes in between the earth and moon
the moon is stationary
the time taken by the moon to rotate on its axis is the same as the time taken by it to revolve round the earth
moon revolves round the sun
mechanical energy is converted to light energy
mechanical energy is converted to heat energy
mechanical energy is converted to electrical energy
electrical energy is converted to mechanical energy
increases
decreases
remains the same
is constant
heat
electric potential
time
distance between two points
force on each square centimetre of the small piston is less than the force on each square centimetre of the large piston
the distance the small piston moves is equal to the distance the large piston moves
applied pressure is equally transmitted throughout the liquid in all directions
force acting on small piston is equal to the force acting on large piston
a kilometre
light year
the average distance from the earth to the sun
None of the above
kinetic energy
potential energy
acceleration
All the above
in hospital in the treatment of malignant growth
to reveal hidden flaws in metal castings and welded joints
to detect alterations made in works of art
All the above
good conductor of heat
good conductor of electricity
bad conductor of electricity
Both (a) and (b) above
X
Y
X + Y
X Y
its momentum is halved
its kinetic energy is halved
its acceleration is halved
its potential energy is halved
a glass rod with flannel
an abonite rod with flannel
a glass rod with silk
Any of the above
Copper
Lead
Tin
Iron
taking photos of various objects
recording and reproducing three dimensional images
tracing out planets and stars in the sky
transmitting light waves
velocity
momentum
acceleration
angular velocity
the forces of cohesion of the molecules within are very much less in them
the forces of cohesion are very large
the forces of adhesion are large
the forces of adhesion are less
Saturn
Jupiter
Earth
Mercury
a -rays
� -rays
? -rays
Cosmic rays
Bernoulli's principle
Magnetic properties of the ship's material
Newton's third law of motion
Earth's gravitational force
light travels very much faster than sound
sound travels faster than light
lightning occurs nearer than thunder
both travel at the same speed
Fusion converts nuclear energy into heat
Fusion demands conditions of extremely high temperature to produce it
Fusion produces large amount of heat
Fusion reactions takes place in the sun
brown for earth, yellow for live, light blue for neutral
green for earth, yellow for live, brown for neutral
yellow for earth, green for live, brown for neutral
brown or red for live, light blue or black for neutral and green or yellow for earth
Pyrometer
Eudiometer
Barometer
Hydrometer