electrical energy into light energy
light energy into electrical energy
light energy into heat energy
electrical energy into heat energy
B. light energy into electrical energy
absorption of a neutron by a nucleus
breakup of the nucleus of a heavy atom into two nearly equal halves emitting two or three neutrons and releasing large amounts of nuclear energy in the process
the scattering of neutrons
formation of heavier nucleus
convex mirrors
concave mirrors
concave lenses
lenses irrespective of types
poor reflection from the mirrors
scattering of light from the mirrors
absorption of some light by the mirrors
absorption of light by the atmosphere
Saturn
Jupiter
Earth
Mercury
Giant stars
White Dwarf stars
Neutron stars
Super-giant stars
the Sun
the Moon
the Venus
the Mars
electrical energy into light energy
light energy into electrical energy
light energy into heat energy
electrical energy into heat energy
protons
electrons
neutrons
positrons
copper
tungsten
mica
nichrome
the air circulated by the fan is cool
the fan produces convection currents of air
the air circulated by the fan quickens the evaporation of the moisture on our skin
the air takes away the heat from our body
maximum at the equator
minimum at the equator
minimum at the poles
the same everywhere
1000 km
1500 km
2000 km
500 km
short sight
long sight
astigmatism
presbyopia
Sound energy from his mouth is then directed in one direction
The cupped hand acts as a cardboard tube of short length
The pitch of sound increases
Both (a) and (b)
Earth and Mars
Venus and Earth
Mars and Jupiter
Moon and Mars
enclosing it in a thick walled iron box
wrapping it with an insulator
by placing it inside a glass case
by surrounding it with fine copper gauze
the gun moves forward
the gun jumps up
the gun does not move
the gun recoils with the same momentum as the bullet
of the same size as the object
at the same distance behind the mirror as the object is in front of it
virtual and laterally inverted
All the above
the surface of ice is smooth
ice is cold
the pressure on the ice due to skate melts the ice by lowering its melting point forming a thin film of water
the pressure on the ice due to skate raises its melting point
as soon as he hears the report of the gun
the moment he sees the flash
either (a) or (b) since that makes no difference
None of the above
about 75% of hydrogen
22% helium
traces of most other elements including oxygen, neon, carbon and nitrogen
All the above
The Milky Way
Radio Galaxy
Andromeda Nebula
Magellanic Clouds
velocity
momentum
acceleration
angular velocity
Thorium
Uranium
Plutonium
Radium
a fluid to transmit the braking force
the force applied by the driver
hydrogen gas and not any liquid
a vacuum brake
generally considered as a desert happening
caused by unequal heating of the several layers of the atmosphere above the desert
in which the refracted rays take a curved path resulting in total internal refection
All the above
look like falling stars
are really pieces of rock or metal
burn up as they shoot through the air
All the above
both its mass and weight will be different
its mass will be different but the weight will remain the same
its mass and weight will both remain unchanged
its mass will remain the same but weight will be different
wide and shallow
narrow and shallow
wide and deep
narrow and deep
historical sites
architecture
sound
trigonometry