decreases
increases
remains the same until all the ice has melted and then increases
remains the same
A. decreases
increases as the square root of the absolute temperature
decreases with temperature
is independent of temperature
None of these
the resistance
the square of the current flowing through it
the time the current flows
All the above
protons
electrons
neutrons
positrons
is more than at sea level
is equal to that sea level
is less than at sea level
depends on the surrounding temperature
Red
Blue
Yellow
Violet
Neutron and Proton
Electron and Proton
Neutron and Electron
Proton, Neutron and Electron
rubber
plastic
aluminium
wood
18 km/s
11.2 km /s
21 km/s
35 km/s
reduction of seating capacity in the hall
increase of sound intensity in the hall
lining the walls, with leather panels put on over a layer of sound absorbent glass fibre
by opening the doors and windows of concert hall
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)
in medical and surgical diagnosis
in testing the quality of the linings and pads used in vehicles and aircraft brakes
to clean surgical instruments, jewellery and similar articles
All the above
fish are cold-blooded animals
ice is a bad conductor of heat
there will always be water just beneath the ice level
they can adapt themselves to live in ice
absorbs
refracts
reflects
scatters
sound energy is converted into electrical energy
electrical energy is converted into sound energy
sound energy is converted into mechanical energy
mechanical energy is converted into sound energy
the square of the current
the resistance of the conductor
the time for which the current flows
All the above
1.9 x 10-13 kg
9.1 x 10-31 kg
1 x 10-15 kg
1.6 x 10-19 kg
so that they may reflect thermal radiation from outside and minimise such radiation from them
so that they may absorb all radiation from outside
to make them attractive to look at
because they take high polish
its density being very high 13.6 g/cm3 the height of mercury column is conveniently small
at the ordinary temperature its vapour pressure is small
it is opaque and does not wet glass
All the above
Pascal's law
Principle of Archimedes
Boyle's law
Hooke's law
troposphere
stratosphere
mesosphere
ionosphere
Daniell cell
Leclanche cell
Dry cell
All the above
proton
antiproton
positron
neutron
212°
32°
-40°
0°
0° C
-15° C
4° C
15° C
a parabola
a horizontal straight line
a vertical straight line
a circle
it has high thermal conductivity
it has uniform expansivity
it has high boiling point and low freezing point
of all the above
Mercury and Earth
Earth and Mars
Mars and Saturn
Mars and Jupiter
electrons
neutrons
neutrons and electrons
electrons, neutrons and other particles
equal to half its focal length
equal to its focal length
twice its focal length
not related to its focal length
lead
zinc
carbon
tin