electric current - ampere
resistance - Ohm
electric power - volt
electric charge Coulomb
C. electric power - volt
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
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
on the outer surface
in the inner surface
at the centre of the ring
None of the above
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
historical sites
architecture
sound
trigonometry
the same direction as the motion
the opposite direction of the motion
all the directions
upward direction
2 minutes
4 minutes
12 minutes
8 minutes
both pieces will lose their magnetism
one piece will have North Pole on both ends and the other South Pole on its both ends
each will remain a magnet with North Pole at one end and South Pole at the other
the longer piece will behave as a bar magnet while the smaller will have no magnetism at all
increase
decrease
remain unaffected
have its shape changed
a glass rod with flannel
an abonite rod with flannel
a glass rod with silk
Any of the above
at the middle
at a point away from the hinge (near the rim)
near the hinge
None of the above
speed
frequency
wavelength
All the above
the quantity of heat energy in a body
thermal radiations quantitatively
high temperature
the intensity of sound
momentum
velocity
acceleration
inertia
Sound energy from his mouth is then directed in one direction
The cupped hand acts as a cardboard tube of short length
The pitch of sound increases
Both (a) and (b)
centrifugal force
frictional force
gravitational force
distillation
Bernoulli's principle
Magnetic properties of the ship's material
Newton's third law of motion
Earth's gravitational force
speed of sound is greater in steel than in air
speed of sound is greater in air than in steel
part of sound waves is reflected between rail tracks
the boy's ears are at a different distance from the source
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
increases
decreases
remains the same
first increases then decreases
copper
tungsten
mica
nichrome
18 km/s
11.2 km /s
21 km/s
35 km/s
light comes through circular gaps between the leaves
the leaves are circular
the rays bend to form circular spots
the gaps between the leaves act as pin holes
Saturn
Jupiter
Earth
Mercury
the sun comes in between the earth and moon
the moon is stationary
the time taken by the moon to rotate on its axis is the same as the time taken by it to revolve round the earth
moon revolves round the sun
electric current - ampere
resistance - Ohm
electric power - volt
electric charge Coulomb
is real
is virtual
can be obtained on a screen
is slightly bigger than the object
the ionised hydrogen molecule
the nucleus of helium atom
the nucleus of hydrogen atom
the positive counterpart of electron
protects the article from atmospheric corrosion
gives it a more attractive appearance
Both (a) and (b) above
None of the above
nuclear fusion
nuclear fission
Both (a) and (b) above
Neither (a) nor (b)