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
D. All the above
increase
decrease
remain the same
None of the above
generally considered as a desert happening
caused by unequal heating of the several layers of the atmosphere above the desert
in which the refracted rays take a curved path resulting in total internal refection
All the above
an altimeter
a fathometer
a hydrometer
a sonometer
will increase
will decrease
will have no change
will either increase or decrease
to make it smooth and frictionless
to make it rust - proof
to reduce heat loss by radiation
to make it more durable
1000 km
1500 km
2000 km
500 km
conduction and convection only
conduction and radiation only
convection and radiation only
conduction, convection and radiation
red
violet
green
yellow
18 km/s
11.2 km /s
21 km/s
35 km/s
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
330 m
33 m
16.5 m
165 m
Bernoulli's principle
Magnetic properties of the ship's material
Newton's third law of motion
Earth's gravitational force
1.9 x 10-13 kg
9.1 x 10-31 kg
1 x 10-15 kg
1.6 x 10-19 kg
Giant stars
White Dwarf stars
Neutron stars
Super-giant stars
oxidation of the tungsten filament
bursting of the bulb
loss of light due to absorption
keeping the weight of the bulb less
they contain free electrons
their atoms are relatively far apart
their atoms collide frequently
they have reflecting surfaces
planets do not have light of their own whereas stars shine by their own light
planets do not twinkle like stars
planets are much smaller than stars
All the above
Albert Einstein
Enrico Fermi
HJ Bhabha
Sir Isaac Newton
the forces of cohesion of the molecules within are very much less in them
the forces of cohesion are very large
the forces of adhesion are large
the forces of adhesion are less
has no effect on the boiling point of a liquid
raises the boiling point of a liquid
lowers the boiling point of a liquid
increases the volume of a liquid
will jump rapidly up and down for a short time
will remain unaffected
Both (a) and (b) above
It will produce electric shock
for automatically maintaining a steady temperature
for measuring electricity
to reduce the voltage of electricity
for producing heat
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
increasing the length of the coiled wire
increasing current supply
increasing the size of the iron core
All the above
high resistance and high melting point
high resistance and low melting point
low resistance and high melting point
low resistance and low melting point
momentum
velocity
acceleration
inertia
decreasing the radius of the capillary tube
increasing the radius of the capillary tube
increasing the height of water in the vessel
None of these
diffusion
viscosity
surface tension
capillarity
0 K
273 K
373 K
100 K
Michael Faraday
Torricelli
Thomas Alva Edison
Benjamin Franklin