force
velocity
acceleration
speed
D. speed
72°
60°
36°
90°
kinetic energy
potential energy
acceleration
All the above
Wilhelm Roentgen
WO Coolidge
Henry Cavendish
William Watson
transverse
longitudinal
transverse and longitudinal
neither transverse nor longitudinal
greater than the weight of the man
less than the weight of the man
same as the weight of the man
zero
direct sun's rays
radiation from earth's surface
radiogenic heat (resulting from radioactive decay)
cosmic rays coming from space
air
glass
vacuum
water
fluorescence
incandescence
both (a) and (b)
None of these
reverberate
be heard by us faintly
be heard upto 10 km from it
not be heard at any distance at all from it
a -rays
� -rays
? -rays
Cosmic rays
sugar
sodium carbonate
common salt
carbonates of calcium and magnesium
light travels very much faster than sound
sound travels faster than light
lightning occurs nearer than thunder
both travel at the same speed
power
velocity
energy widely used in nuclear physics
number of electrons
for measuring relative density of liquids
by ships to pass on messages
for determining the depth of ocean bottoms etc.
by deaf people to aid hearing
Kepler's Laws
Newtonian Third Law of Motion
Bernoulli's Principle
Law of Relativity
conduction
convection
radiation
absorption
increases
decreases
remains unchanged
first decreases then increases
greater than the weight of the man
less than the weight of the man
same as the weight of the man
zero
Voltaic cell
Leclanche cell
Dry cell
An accumulator
momentum
velocity
acceleration
inertia
a horizontal position
a nearly vertical position with its South Pole downwards
a nearly vertical position with its North Pole downwards
a slanting position
one
two
three
infinite
reverberate
be heard by us faintly
be heard upto 10 km from it
not be heard at any distance at all from it
copper
tungsten
mica
nichrome
warm and moist
cool and dry
warm and dry
cool and moist
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
A. Anemometer | 1. Measurement of power |
B. Tachometer | 2. Wind speed |
C. Dynamometer | 3. Revolutions per minute |
D. Barometer | 4. Atmospheric pressure |
* | 5. Current from a dynamo |
A-1 B-3 C-5 D-4
A-2 B-1 C-3 D-4
A-2 B-3 C-1 D-4
A-1 B-3 C-5 D-2
conduction and convection only
conduction and radiation only
convection and radiation only
conduction, convection and radiation
Lens
Iris
Retina
Eyelid
a reflecting elliptical portion
a reflecting spherical surface
a parabolic reflecting surface
a flat reflecting surface