X
Y
X + Y
X Y
D. X Y
Hygrometer
Hypsometer
Hydrometer
Densimeter
brown for earth, yellow for live, light blue for neutral
green for earth, yellow for live, brown for neutral
yellow for earth, green for live, brown for neutral
brown or red for live, light blue or black for neutral and green or yellow for earth
it is pleasing to the eye
it has a traditional colour
it is easily distinguishable
it is most sensitive to the human eye
electrical energy into light energy
light energy into electrical energy
light energy into heat energy
electrical energy into heat energy
40 years
50 years
76 years
80 years
an erect, virtual image of diminished size
an erect, real image of diminished size
an erect, real image of double size
a virtual image of double size
its density
its temperature
its elasticity
All the above
nuclear fusion
nuclear fission
Both (a) and (b) above
Neither (a) nor (b)
Fusion converts nuclear energy into heat
Fusion demands conditions of extremely high temperature to produce it
Fusion produces large amount of heat
Fusion reactions takes place in the sun
the atoms and molecules lose their identity
nucleus is split into fragments
the nuclear reaction between two light atomic nuclei results in the formation of a heavier nucleus with release of a large quantity of nuclear energy in the process
absorption of neutron by a nucleus
Dalton
Rutherford
Einstein
Planck
a convex mirror behind it
a concave lens behind it
a concave mirror in front of it
a concave mirror behind it
the mass of earth
the mass of the satellite
the radius of the earth
gravitation of the earth
Bhaskara
Insat I-A
Aryabhatta
SLV-l
electroplating
electrotyping
electrolysis
distillation
copper
aluminium
silver
nichrome
a neutron star
a binary star
a dwarf star
a polar star
Jupiter
Mercury
Venus
Sirius
radio waves and X-rays
ultraviolet light waves
visible light waves
All the above
Tin
Lead
Nickel
An alloy of tin and lead
to stabilise the voltage
to decrease the current supply
to increase the current supply
to prevent an unduly high current from passing through a circuit
telescope
spectrometer
microscope
periscope
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
increases to a great extent
increases slightly
decreases slightly
decreases rapidly
an altimeter
a fathometer
a hydrometer
a sonometer
virtual and upright
virtual and inverted
real and inverted
real and upright
Sirius
Vega
Rigel
Proxima Centauri
Proxima Centauri
Sirius
Aldebaran
Vega
Marconi
Oersted
Faraday
Ohm
elliptical
a straight line
a parabola
a vertical line