James Clerk Maxwell
Heinrich Hertz
Thomas Alva Edison
Baird
C. Thomas Alva Edison
the reflection of sound waves
the refraction of sound waves
the interference of sound waves
reverberation of sound waves
enclosing it in a thick walled iron box
wrapping it with an insulator
by placing it inside a glass case
by surrounding it with fine copper gauze
the ionised hydrogen molecule
the nucleus of helium atom
the nucleus of hydrogen atom
the positive counterpart of electron
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
the same as the direction of the vibrations of the vibrating body
at right angles to the direction of the vibrations of the vibrating body
Both (a) and (b) above
None of the above
the material of the wire
the length of the wire
the cross section of the wire
All the above
Jupiter
Mercury
Venus
Sirius
velocity
wavelength
frequency
Both (a) and (b) above
they contain free electrons
their atoms are relatively far apart
their atoms collide frequently
they have reflecting surfaces
increases
decreases
remains the same
first increases then decreases
turbulence caused by the wind
buoyancy of air
unequal pressures acting on it
sudden change in the direction of the wind
of the same size as the object
at the same distance behind the mirror as the object is in front of it
virtual and laterally inverted
All the above
ACBD
ABCD
CABD
BACD
air
glass
vacuum
water
the square of the current
the resistance of the conductor
the time for which the current flows
All the above
electroplating
electrotyping
electrolysis
distillation
Newton
Pascal
Archimedes
Galileo
the same direction as the motion
the opposite direction of the motion
all the directions
upward direction
increases
decreases
neither increases nor decreases
first increases then decreases
light energy into electrical energy
electrical energy into light energy
magnetic energy into electrical energy
electrical energy into mechanical energy
watt
degree
joule
erg
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
INSAT
Bhaskara
Aryabhatta
All the above
elliptical
a straight line
a parabola
a vertical line
a reflecting elliptical portion
a reflecting spherical surface
a parabolic reflecting surface
a flat reflecting surface
increase
decrease
remain the same
None of the above
cools the body that transfers it
heats the body that absorbs the heat
may change the physical state of the substance
All the above
resistor
thermocouple
light bulb
neon tube
necessary oxygen for burning of oil may be provided
the convection current of air may be maintained to keep the lamp burning
the brightness of the lamp may be increased
All the above
the mass number
atomic number
atomic weight
absolute number