alternating current of very high frequency
alternating current of very high voltage
a very large direct current
a high voltage direct current
B. alternating current of very high voltage
insulators
semiconductors
superconductors
condenser
velocity
momentum
acceleration
angular velocity
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
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
A. Manometer | 1. Depth of sea |
B. Audiometer | 2. High temperatures |
C. Pyrometer | 3. Level of human hearing |
D. Fathometer | 4. Pressure of a gas |
A-1 B-4 C-3 D-2
A-4 B-3 C-1 D-2
A-4 B-3 C-2 D-1
A-3 B-4 C-1 D-2
for automatically maintaining a steady temperature
for measuring electricity
to reduce the voltage of electricity
for producing heat
velocity
wavelength
frequency
Both (a) and (b) above
capillarity
cohesion
adhesion
viscosity
light energy into electrical energy
electrical energy into light energy
magnetic energy into electrical energy
electrical energy into mechanical energy
Liquid ammonia
Carbon tetrafluoride
Dichloro-difluoro-methane
Sulphur dioxide
chemical, heating and magnetic effects of electricity
discharge of electricity through gases
the action of ultraviolet radiation on certain fluorescent materials
Both (b) and (c) above
Microphone converts sound energy into electrical energy.
Electric fan converts electrical energy into mechanical energy.
Battery converts chemical energy into electrical energy.
All the above
in burglar alarms
in automotive devices for light switches
television cameras
All the above
air
glass
vacuum
water
replace the fuse by a thin wire
replace the fuse by a thick copper wire
replace the fuse by a fuse wire of proper rating
replace the fuse by nichrome wire
sugar
sodium carbonate
common salt
carbonates of calcium and magnesium
power
kinetic energy
momentum
impulse
copper
aluminium
silver
nichrome
its density being very high 13.6 g/cm3 the height of mercury column is conveniently small
at the ordinary temperature its vapour pressure is small
it is opaque and does not wet glass
All the above
the quantity of heat energy in a body
thermal radiations quantitatively
high temperature
the intensity of sound
as soon as he hears the report of the gun
the moment he sees the flash
either (a) or (b) since that makes no difference
None of the above
iron
chromium
copper
steel
shifted upwards
shifted downwards
shifted neither upward nor downward
shifted upward or downward depending on the density of the liquid
speed
frequency
wavelength
All the above
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
mininuclear reactor
a dynamo
a thermopile
solar cells
Crown glass
Water
Flint glass
Diamond
same number of protons but different number of neutrons
same number of neutrons but different number of protons
the same total number of protons and neutrons
same number of protons and different number of electrons
decreasing the radius of the capillary tube
increasing the radius of the capillary tube
increasing the height of water in the vessel
None of these
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