insulators
semiconductors
superconductors
condenser
C. superconductors
glass allows the heat radiations of shorter wavelengths from the sun to pass through
the plants absorb them - these shorter wavelengths - and reradiate them in the form of longer wavelengths
the longer wavelengths cannot penetrate through the glass walls
All the above
for automatically maintaining a steady temperature
for measuring electricity
to reduce the voltage of electricity
for producing heat
zero
the centrifugal force
reaction due to steady burning of fuel
the gravitational pull on the body by the earth is the weight of the body which provides the centripetal force
the hot water contains a much larger quantity of internal energy than the boiling water
the boiling water contains more quantity of internal energy than the warm water
both of them have got the same amount of internal energy.
nothing can be said definitely with the data given
an erect, virtual image of diminished size
an erect, real image of diminished size
an erect, real image of double size
a virtual image of double size
Neptune and Pluto
Jupiter and Saturn
Venus and Mars
Venus and Saturn
watt
degree
joule
erg
force
velocity
acceleration
speed
mercury thermometers
alcohol thermometers
platinum resistance thermometers
thermoelectric thermometers
October 20, 1978
November 14, 1978
January 26, 1979
April 19, 1975
Wilhelm Roentgen
WO Coolidge
Henry Cavendish
William Watson
ultraviolet rays
gamma rays
radio waves
infrared waves
elliptical
a straight line
a parabola
a vertical line
colours of the rainbow
colours in the spectrum of white light
colours which cannot be produced by mixing other colours
colours found in nature
does not allow the lightning to fall on the building at all
drives away the charged clouds
forces the lightning to fall on other buildings near that building
conducts the electric charges to the ground when lightning strikes the building
It will go down
It will come up
It will remain at the same level
First it will go down and it will come up
greater
less
the same
None of these
a -rays
� -rays
? -rays
X-rays
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
poor reflection from the mirrors
scattering of light from the mirrors
absorption of some light by the mirrors
absorption of light by the atmosphere
Hygrometer
Hypsometer
Hydrometer
Densimeter
increases
decreases
remains the same
first increases then decreases
the time for the upward journey and downward journey are the same
the upward journey takes more time
the downward journey takes more time
Cant be said
Coulomb
Gilbert
Volta
Rutherford
the same as the direction of the vibrations of the vibrating body
at right angles to the direction of the vibrations of the vibrating body
Both (a) and (b) above
None of the above
the gun moves forward
the gun jumps up
the gun does not move
the gun recoils with the same momentum as the bullet
refraction of light from them through air
reflection
absorption
All the above
James Clerk Maxwell
Heinrich Hertz
Thomas Alva Edison
Baird
Space ship
Lunar module
Radar
Rocket
potential difference
resistance
current
All the above