is more than at sea level
is equal to that sea level
is less than at sea level
depends on the surrounding temperature
C. is less than at sea level
the square of the current
the resistance of the conductor
the time for which the current flows
All the above
resistor
thermocouple
light bulb
neon tube
�± -rays
�² -rays
�³ -rays
Cosmic rays
the sun comes in between the earth and moon
the moon is stationary
the time taken by the moon to rotate on its axis is the same as the time taken by it to revolve round the earth
moon revolves round the sun
it has no population
it is quite far off
its surface is full of rocks
its gravity is not sufficient for any atmosphere to hold on to it
absorption of a neutron by a nucleus
breakup of the nucleus of a heavy atom into two nearly equal halves emitting two or three neutrons and releasing large amounts of nuclear energy in the process
the scattering of neutrons
formation of heavier nucleus
conduction
convection
radiation
absorption
centrifugal force
frictional force
gravitational force
distillation
amplitude
vibration
frequency
phase
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
at the lower elevation than the bird
at a higher elevation than the bird
in the same direction as the bird
vertically upwards
forward
backward
sideways
None of the above
there is very little friction between the ice and feet pressing it
ice is soft when compared to concrete
there is more friction between the ice and feet
None of the above
there is more friction on ice than on concrete surface
ice is soft and spongy while concrete is hard
the friction between ice and the feet is less than that between the concrete and the feet
None of them
Marconi
Oersted
Faraday
Ohm
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
oxidation of the tungsten filament
bursting of the bulb
loss of light due to absorption
keeping the weight of the bulb less
alcohol is a poor conductor of heat
alcohol can be coloured for its level to be seen easily
its freezing point is very low
it will not stick to the glass tube
Voltmeter
Voltameter
Ammeter
Potentiometer
kinetic energy
potential energy
momentum
both potential and kinetic energy
the surface of ice is smooth
ice is cold
the pressure on the ice due to skate melts the ice by lowering its melting point forming a thin film of water
the pressure on the ice due to skate raises its melting point
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
goes straight through without bending
gets deviated away from the normal
gets bent towards the normal
gets reflected
Volts
Amperes
ohms
coulombs
speed of sound is greater in steel than in air
speed of sound is greater in air than in steel
part of sound waves is reflected between rail tracks
the boy's ears are at a different distance from the source
the temperature is low
there is no air
the pressure is low
All the above
the air circulated by the fan is cool
the fan produces convection currents of air
the air circulated by the fan quickens the evaporation of the moisture on our skin
the air takes away the heat from our body
Voltaic cell
Leclanche cell
Dry cell
An accumulator
Michael Faraday
Torricelli
Thomas Alva Edison
Benjamin Franklin
cool the engine
heat up the engine
start the car
moderate the speed