1.9 x 10-13 kg
9.1 x 10-31 kg
1 x 10-15 kg
1.6 x 10-19 kg
B. 9.1 x 10-31 kg
Silver
Copper
Nichrome
Dry wood
frequency is higher
wavelength is smaller
pitch is smaller
air is warmer
at the middle
at a point away from the hinge (near the rim)
near the hinge
None of the above
wide and shallow
narrow and shallow
wide and deep
narrow and deep
shifted upwards
shifted downwards
shifted neither upward nor downward
shifted upward or downward depending on the density of the liquid
protons
electrons
neutrons
positrons
Lens
Iris
Retina
Eyelid
2 minutes
4 minutes
12 minutes
8 minutes
the temperature is low
there is no air
the pressure is low
All the above
Ammeter
Altimeter
Adrinometer
Anemometer
Parabolic
Convex
Concave
Plain
the ball will travel towards the centre of the circle and fall down
it will continue to travel along a tangent to the circle at the point the ball was at the time of snapping and finally fall down
it will fall down at the same place where the string breaks
None of these
the time for the upward journey and downward journey are the same
the upward journey takes more time
the downward journey takes more time
Can't be said
convex mirrors
concave mirrors
convex lens
concave lens
the mountains found on the surface of the Sun
the dark patches on the sun having less temperature than the normal sun's surface
ionized gas found near the solar surface
the magnetic storms on the surface of the Sun
watt
degree
joule
erg
the water available is hard
it is colder than at sea level
the potatoes become hard
the boiling point of water is lower at that height on account of low atmospheric pressure
momentum
velocity
acceleration
inertia
the same as the direction of the vibrations of the vibrating body
at right angles to the direction of the vibrations of the vibrating body
Both (a) and (b) above
None of the above
loudness
pitch
quality or timbre
All the above
a thermopile
a load
a step down device
a safety device
Galileo
Bhaskara
Aryabhatta
Ptolemy
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
there is no change in volume
there is no change in temperature
heat is given out
there is no change of state
18 km/s
11.2 km /s
21 km/s
35 km/s
in hospital in the treatment of malignant growth
to reveal hidden flaws in metal castings and welded joints
to detect alterations made in works of art
All the above
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
deflected by electric field
deflected by magnetic field
slightly deflected by electric field and magnetic field
not deflected by electric and magnetic fields
X
Y
X + Y
X Y
increase
decrease
remain unaffected
have its shape changed