3 x 107 ms-1
5 x 108 ms-1
3 x 104 kms-1
3 x 108 ms-1
D. 3 x 108 ms-1
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
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
the same direction as the motion
the opposite direction of the motion
all the directions
upward direction
fluorescence
incandescence
both (a) and (b)
None of these
Voltmeter
Voltameter
Ammeter
Potentiometer
Neptune
Uranus
Jupiter
Saturn
meteors
binaries
variable stars
bright stars
deflected by electric field
deflected by magnetic field
slightly deflected by electric field and magnetic field
not deflected by electric and magnetic fields
power
velocity
energy widely used in nuclear physics
number of electrons
cohesion
adhesion
capillary action
absorption
Saturn
Jupiter
Earth
Mercury
a thermopile
a load
a step down device
a safety device
the nature of the radiating surface
area of the radiating surface
temperature difference between the body and the surroundings
All the above
16 hours
12 hours
20 hours
24 hours
viscosity
surface tension
friction
elasticity
cools the body that transfers it
heats the body that absorbs the heat
may change the physical state of the substance
All the above
in hospital in the treatment of malignant growth
to reveal hidden flaws in metal castings and welded joints
to detect alterations made in works of art
All the above
a quantum of electromagnetic radiation
light source used in photography
a photo film
sun-light
are good conductors of heat
are cheaper
are easily obtained
are bad conductors of heat
Hygrometer
Hypsometer
Hydrometer
Densimeter
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
Venus
Saturn
Mercury
Earth
a microphone
a headphone
a phonograph
an amplifier
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
the material of the wire
the length of the wire
the cross section of the wire
All the above
an ammeter
a rheostat
a voltmeter
a voltameter
Irene Curie
W Bothe and H Becker
James Chadwick
Jean Joliot
sound energy is converted into electrical energy
electrical energy is converted into sound energy
sound energy is converted into mechanical energy
mechanical energy is converted into sound energy
to increase the current flow in a circuit
to decrease the current flow
to measure the flow of electric current
Either (a) or (b) above
the nature of the radiating surface
area of the radiating surface
temperature difference between the body and the surroundings
All the above