Nebulae
Quasars
Meteors
Comets
B. Quasars
increase
decrease
remain the same
first decrease and then increase
deflected by electric field
deflected by magnetic field
slightly deflected by electric field and magnetic field
not deflected by electric and magnetic fields
warm and moist
cool and dry
warm and dry
cool and moist
�± -rays
�² -rays
�³ -rays
X-rays
the square of the current
the resistance of the conductor
the time for which the current flows
All the above
the mountains found on the surface of the Sun
the dark patches on the sun having less temperature than the normal sun's surface
ionized gas found near the solar surface
the magnetic storms on the surface of the Sun
first rise and then fall
fall
remain the same
rise
ACBD
ABCD
CABD
BACD
the size and shape of the room
the ability of the ceiling, walls and floor to exclude unwanted sound
the use of furnishings made of sound absorbing materials
All the above
shifted upwards
shifted downwards
shifted neither upward nor downward
shifted upward or downward depending on the density of the liquid
Voltmeter
Voltameter
Ammeter
Potentiometer
40 years
50 years
76 years
80 years
increases
decreases
remains unchanged
first decreases then increases
Wilhelm Roentgen
WO Coolidge
Henry Cavendish
William Watson
similar charges of electricity rush towards each other and then get repelled
clouds strike against impurities in air and the friction burns up these impurities
strong opposite charges in different clouds break down the resistance offered by the intervening air
water vapour produces electricity in the clouds
are good conductors of heat
are cheaper
are easily obtained
are bad conductors of heat
cohesive force
surface tension
diffusion
viscosity
the mass of its bob
the material of the bob
the amplitude of vibration
acceleration due to the gravity at the site of experiment
Rutherford
Bohr
Henri Bacquerel
Marie Curie
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
increases to a great extent
increases slightly
decreases slightly
decreases rapidly
light travels very much faster than sound
sound travels faster than light
lightning occurs nearer than thunder
both travel at the same speed
equal to half its focal length
equal to its focal length
twice its focal length
not related to its focal length
50 kg
45 kg
zero
150 kg
copper
aluminium
silver
nichrome
Sun
Jupiter
Mercury
Earth
a planet
a meteor
a star
a comet
HJ Bhabha
SS Bhatnagar
V Sarabhai
CV Raman
can focus very rapidly as pictures change
is quicker than the brain
can see two images separated only if the interval' between seeing them is more than' one-tenth of a second
can shut out some of the light
Uranium that is very pure
Uranium in which the concentration of the isotope U-238 is more than in the naturally occuring uranium
Uranium in which the concentration of the isotope U-235 is more than in the naturally occuring uranium
None of the above