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
A. the least scattered red colour reaching the eye
Joule
Newton
Joule/Sec
Erg/Sec
its atmosphere
its distance from the sun
its rotation
All the above
the curvature of earth limits the range of reception
the signals are weak
the signals are absorbed by air
the antennae are not powerful enough
the quantity of heat energy in a body
thermal radiations quantitatively
high temperature
the intensity of sound
electrical energy into heat energy
electrical energy into mechanical energy
mechanical energy into electrical energy
mechanical energy into heat energy
it can be transmitted easily and efficiently
Alternating Current (AC) loses the least amount of energy when transmitted at high voltages
Alternating Current (AC) voltage can be easily increased or decreased
all the above
72°
60°
36°
90°
potential difference
resistance
current
All the above
Marconi
Baird
John Bardeen, Walter H. Brattain and William Shockley
Edison
protons
electrons
neutrons
positrons
equal to its focal length
equal to its radius of curvature
equal to the reciprocal of its focal length (in metres)
equal to twice its focal length
iron
chromium
copper
steel
a microphone
a headphone
a phonograph
an amplifier
Space ship
Lunar module
Radar
Rocket
pouring ice cold water into the inner tumbler
pouring ice cold water on the outer tumbler
pouring hot water into the inner tumbler
dipping both the tumblers in hot water
the mass of earth
the mass of the satellite
the radius of the earth
gravitation of the earth
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
is more than at sea level
is equal to that sea level
is less than at sea level
depends on the surrounding temperature
a horizontal position
a nearly vertical position with its South Pole downwards
a nearly vertical position with its North Pole downwards
a slanting position
resistance
charge
potential
charge/potential ratio
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
212°
32°
-40°
0°
the ampere
the volt
the ohm
the coulomb
iris
pupil
ciliary body
cornea
a neutron star
a binary star
a dwarf star
a polar star
it is lighter
it has more water vapour in it
its molecules are close together
its molecules are far apart
placing it inside a solenoid through which an alternating current is flowing
heating the magnet to redness and then allowing it to cool
dropping it several times or hammering it while lying east-west
All the above
diffusion
viscosity
surface tension
capillarity
0° C
-15° C
4° C
15° C
direct sun's rays
radiation from earth's surface
radiogenic heat (resulting from radioactive decay)
cosmic rays coming from space