the same direction as the motion
the opposite direction of the motion
all the directions
upward direction
B. the opposite direction of the motion
resistor
thermocouple
light bulb
neon tube
ultraviolet rays
gamma rays
radio waves
infrared waves
replace the fuse by a thin wire
replace the fuse by a thick copper wire
replace the fuse by a fuse wire of proper rating
replace the fuse by nichrome wire
sinks less in the sea
sinks more in the sea
neither sinks more nor less in the sea
sinking more or less depends on sea
the chemical reaction between the gases inside the bulb
the compressed gases inside rushing out suddenly
the air outside rushing in to fill the vacuum inside the bulb
None of the above
Albert Einstein
Enrico Fermi
HJ Bhabha
Sir Isaac Newton
the retina of the eye moves forward
the retina of the eye moves backward
c).the iris is unable to dilate the pupil immediately to be able to see things
the eye has no power of accommodation
a horizontal position
a nearly vertical position with its South Pole downwards
a nearly vertical position with its North Pole downwards
a slanting position
Wilhelm Roentgen
WO Coolidge
Henry Cavendish
William Watson
to make it smooth and frictionless
to make it rust - proof
to reduce heat loss by radiation
to make it more durable
placing it inside a solenoid through which an alternating current is flowing
heating the magnet to redness and then allowing it to cool
dropping it several times or hammering it while lying east-west
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
inertia
adhesion
cohesion
friction
diffusion
viscosity
surface tension
capillarity
for measuring the velocity of wind
in the manufacture of fireworks
in finding the coefficient of apparent expansion of a liquid
for measuring high temperatures
planets do not have light of their own whereas stars shine by their own light
planets do not twinkle like stars
planets are much smaller than stars
All the above
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
an indeterminate quantity
equal to the weight of the ship
greater than the weight of the ship
less than the weight of the ship
wide and shallow
narrow and shallow
wide and deep
narrow and deep
in burglar alarms
in automotive devices for light switches
television cameras
All the above
taking photos of various objects
recording and reproducing three dimensional images
tracing out planets and stars in the sky
transmitting light waves
in the live wire
in the neutral wire
in the earth wire
anywhere
a stone
a piece of wood
a feather
all will reach the ground at the same time
high resistance and high melting point
high resistance and low melting point
low resistance and high melting point
low resistance and low melting point
18 km/sec
11.2 km/ sec
21 km/ sec
35 km/ sec
forward
backward
sideways
None of the above
rubber
plastic
aluminium
wood
the telephone ear piece
the telegraph
the electric bell
All the above
umbra
penumbra
image
black portion of light
a planet
a meteor
a star
a comet