October 20, 1978
November 14, 1978
January 26, 1979
April 19, 1975
D. April 19, 1975
Nebulae
Quasars
Meteors
Comets
an altimeter
a fathometer
a hydrometer
a sonometer
a quantum of electromagnetic radiation
light source used in photography
a photo film
sun-light
travelling in opposite direction
of slightly different frequencies
of equal wavelength
of equal amplitude
goes straight through without bending
gets deviated away from the normal
gets bent towards the normal
gets reflected
transmutation
fission
fusion
radioactivity
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
an electrophorus
an electroscope
an electromagnet
an ammeter
at the middle
at a point away from the hinge (near the rim)
near the hinge
None of the above
zero
the centrifugal force
reaction due to steady burning of fuel
the gravitational pull on the body by the earth is the weight of the body which provides the centripetal force
40 years
50 years
76 years
80 years
a convex mirror behind it
a concave lens behind it
a concave mirror in front of it
a concave mirror behind it
an indeterminate quantity
equal to the weight of the ship
greater than the weight of the ship
less than the weight of the ship
Neptune
Uranus
Jupiter
Saturn
force
velocity
acceleration
speed
Venus
Saturn
Mercury
Earth
protects the article from atmospheric corrosion
gives it a more attractive appearance
Both (a) and (b) above
None of the above
he may increase his speed
his weight may be reduced
necessary centripetal force may be available from the horizontal component of the normal reaction due to the track to maintain the curved motion
no frictional force may be produced between the wheels and the axle
lowers the melting point of ice
raises the melting point of ice
has no effect on the melting point of ice
may lower or raise the melting point depending upon the type of impurities
October 20, 1978
November 14, 1978
January 26, 1979
April 19, 1975
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
there is no change in volume
there is no change in temperature
heat is given out
there is no change of state
18 km/sec
11.2 km/ sec
21 km/ sec
35 km/ sec
the mass number
atomic number
atomic weight
absolute number
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
a kilometre
light year
the average distance from the earth to the sun
None of the above
electrical energy into light energy
light energy into electrical energy
light energy into heat energy
electrical energy into heat energy
white paint is economical
it does not fade off
it does not crack with higher temperature
white coating is a bad conductor of heat and reflects heat rays that fall on it, thus keeping the inside cool
Cosmic rays
Infrared rays
All radiations of light
Ultra violet rays coming from the sun
deflected by electric field
deflected by magnetic field
slightly deflected by electric field and magnetic field
not deflected by electric and magnetic fields