there is no change in volume
there is no change in temperature
heat is given out
there is no change of state
B. there is no change in temperature
oxidation of the tungsten filament
bursting of the bulb
loss of light due to absorption
keeping the weight of the bulb less
they contain free electrons
their atoms are relatively far apart
their atoms collide frequently
they have reflecting surfaces
Pascal's law
Bernoulli's law
Archimedes' law
Boyle's law
conservation of mass
Newtonian law of action and reaction
conservation of angular momentum
None of the above
necessary oxygen for burning of oil may be provided
the convection current of air may be maintained to keep the lamp burning
the brightness of the lamp may be increased
All the above
velocity
wavelength
frequency
Both (a) and (b) above
first
second
third
fourth
Marconi
Baird
John Bardeen, Walter H. Brattain and William Shockley
Edison
Ammeter
Altimeter
Adrinometer
Anemometer
both walls are silvered on the vacuum side
there is vacuum between the double walls
the cork is a poor conductor of heat
of all the above
the water available is hard
it is colder than at sea level
the potatoes become hard
the boiling point of water is lower at that height on account of low atmospheric pressure
necessary oxygen for burning of oil may be provided
the convection current of air may be maintained to keep the lamp burning
the brightness of the lamp may be increased
All the above
adhesion
surface tension
gravitational force
atmospheric pressure from all sides
a -rays
� -rays
? -rays
Cosmic rays
Bangalore
Mumbai
Ahmedabad
New Delhi
4 x 10 8 m/s
1500 m/s
330 m/s
500 m/s
X
Y
X + Y
X Y
its momentum is halved
its kinetic energy is halved
its acceleration is halved
its potential energy is halved
Tin
Lead
Nickel
An alloy of tin and lead
the resistance
the square of the current flowing through it
the time the current flows
All the above
cool the engine
heat up the engine
start the car
moderate the speed
these signals are electromagnetic in nature
these are not electromagnetic in nature
their wavelength is very large
they are not reflected by the ionosphere but pass through it
on the outer surface
in the inner surface
at the centre of the ring
None of the above
chemical energy into heat energy
mechanical energy into heat energy
protons into neutrons
mass into energy according to Einstein's equation
is proportional to its original length
is proportional to the increase of temperature
is inversely proportional to its original length
Both (a) and (b) above
an ammeter
a rheostat
a voltmeter
a voltameter
sugar
sodium carbonate
common salt
carbonates of calcium and magnesium
refraction of light from them through air
reflection
absorption
All the above
Sir Isaac Newton
Kepler
Copernicus
Ptolemy
the ionised hydrogen molecule
the nucleus of helium atom
the nucleus of hydrogen atom
the positive counterpart of electron