helium
argon
hydrogen
oxygen
C. hydrogen
mechanical energy is converted to light energy
mechanical energy is converted to heat energy
mechanical energy is converted to electrical energy
electrical energy is converted to mechanical energy
force
velocity
acceleration
speed
Parabolic
Convex
Concave
Plain
angle of inclination of the earth
changes in radio-active minerals in it
period taken by Sun's light to reach the earth
artificial satellites revolving round the earth
1000 km
1500 km
2000 km
500 km
12N
2N
10N
6N
kinetic energy
potential energy
acceleration
All the above
Physics
Chemistry
Biology
Economic
force on each square centimetre of the small piston is less than the force on each square centimetre of the large piston
the distance the small piston moves is equal to the distance the large piston moves
applied pressure is equally transmitted throughout the liquid in all directions
force acting on small piston is equal to the force acting on large piston
a planet
a meteor
a star
a comet
at the lower elevation than the bird
at a higher elevation than the bird
in the same direction as the bird
vertically upwards
in burglar alarms
in automotive devices for light switches
television cameras
All the above
cohesive forces between the mercury molecules are greater than adhesive forces between mercury and glass molecules
the adhesive forces between mercury and glass molecules are greater than the cohesive forces
both the cohesive and adhesive forces are equal
None of the above
it resists oxidation when red hot
its melting point is high
it has got 60 times the resistance of copper
All the above
to keep it away from the hot compressor which is near the bottom
because of convenience
so that it can cool the whole interior by setting up convection currents
to prevent too much cooling
light comes through circular gaps between the leaves
the leaves are circular
the rays bend to form circular spots
the gaps between the leaves act as pin holes
72°
60°
36°
90°
will increase
will decrease
does not change
varies with the increase of depth of the immersion of the iron piece
quinine sulphate solution
paraffin oil
fluorescein solutions
All the above
the least scattered red colour reaching the eye
the dispersion of sun light occurred in air molecule in atmosphere
the diffraction of sunrays in atmospheric layers
interference of all the rays coming from the sun
Voltmeter
Voltameter
Ammeter
Potentiometer
conduction
convection
radiation
absorption
to stabilise the voltage
to decrease the current supply
to increase the current supply
to prevent an unduly high current from passing through a circuit
there is no moisture in the atmosphere
clouds absorb the falling dew
objects emit radiant energy very fast on such nights
objects lose less radiant energy
an indeterminate quantity
equal to the weight of the ship
greater than the weight of the ship
less than the weight of the ship
a kilometre
light year
the average distance from the earth to the sun
None of the above
are electromagnetic waves
can easily pass through vacuum
are always transverse waves
require a material medium for propagation
greater
less
equal
can't be determined
elliptical
a straight line
a parabola
a vertical line
a quantum of electromagnetic radiation
light source used in photography
a photo film
sun-light