he may increase his speed
his weight may be reduced
necessary centripetal force may be available from the horizontal component of the normal reaction due to the track to maintain the curved motion
no frictional force may be produced between the wheels and the axle
C. necessary centripetal force may be available from the horizontal component of the normal reaction due to the track to maintain the curved motion
it is lighter
it has more water vapour in it
its molecules are close together
its molecules are far apart
increase
decrease
remain unaffected
have its shape changed
protects the article from atmospheric corrosion
gives it a more attractive appearance
Both (a) and (b) above
None of the above
fluorescence
incandescence
both (a) and (b)
None of these
for automatically maintaining a steady temperature
for measuring electricity
to reduce the voltage of electricity
for producing heat
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
Television - Baird
Transistor ~ Shockley
Thermometer - Celsius
Barometer Torricelli
the valve filaments have low resistance
valve-radio sets work at a higher voltage
transistor set has a low resistance
filaments of the valves cake time to beat up and function
its density
its temperature
its elasticity
All the above
no charge
positive charge
negative charge
can't be said
greater than the weight of the man
less than the weight of the man
same as the weight of the man
zero
radio waves and X-rays
ultraviolet light waves
visible light waves
All the above
4 x 108 m/s
1500 m/s
330 m/s
500 m/s
will jump rapidly up and down for a short time
will remain unaffected
Both (a) and (b) above
It will produce electric shock
the mass of earth
the mass of the satellite
the radius of the earth
gravitation of the earth
10-10 cm
10-12 cm
10-13 cm
10-16 cm
appears to increase
appears to decrease
does not change at all
first increases then decreases
mininuclear reactor
a dynamo
a thermopile
solar cells
a kilometre
light year
the average distance from the earth to the sun
None of the above
for automatically maintaining a steady temperature
for measuring electricity
to reduce the voltage of electricity
for producing heat
a horizontal position
a nearly vertical position with its South Pole downwards
a nearly vertical position with its North Pole downwards
a slanting position
are electromagnetic waves
can easily pass through vacuum
are always transverse waves
require a material medium for propagation
Newton
Pascal
Archimedes
Galileo
used by warships and military aircraft to locate enemy submarines
used by ships to determine the depth of water beneath them
a detective device that uses sound to locate under - water objects
All the above
The Milky Way
Radio Galaxy
Andromeda Nebula
Magellanic Clouds
telescope
spectrometer
microscope
periscope
he may increase his speed
his weight may be reduced
necessary centripetal force may be available from the horizontal component of the normal reaction due to the track to maintain the curved motion
no frictional force may be produced between the wheels and the axle
212°
32°
-40°
0°
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
cohesive force
surface tension
diffusion
viscosity