Ammeter
Altimeter
Adrinometer
Anemometer
A. Ammeter
iron
chromium
copper
steel
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)
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
equal to half its focal length
equal to its focal length
twice its focal length
not related to its focal length
potential difference
resistance
current
All the above
the pores in the pot are closed
rain water stops oozing out from the pores
the water that oozes out does not evaporate quickly because of the large percentage of moisture in the air
surface of the pot becomes damp
it is lighter
it has more water vapour in it
its molecules are close together
its molecules are far apart
2 minutes
4 minutes
12 minutes
8 minutes
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
increases
decreases
remains unchanged
first decreases then increases
0° C
-15° C
4° C
15° C
telescope
spectrometer
microscope
periscope
alternating current of very high frequency
alternating current of very high voltage
a very large direct current
a high voltage direct current
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
ultraviolet rays
gamma rays
radio waves
infrared waves
Frequency
Amplitude
Speed
Wavelength
the material of the wire
the length of the wire
the cross section of the wire
All the above
a neutron star
a binary star
a dwarf star
a polar star
is proportional to that of the Celsius thermometer
is always greater than that of the Celsius thermometer
is always less than that of the Celsius thermometer
may be greater than or less than or equal to that of the Celsius thermometer
increases
decreases
remains the same
is constant
increase
decrease
remain the same
None of the above
an altimeter
a fathometer
a hydrometer
a sonometer
Cosmic rays
Infrared rays
All radiations of light
Ultra violet rays coming from the sun
Lens
Iris
Retina
Eyelid
the rise of temperature
rise of its frequency
decrease in humidity
fall of temperature
a planet
a meteor
a star
a comet
the path of a star which is nearest to the earth
a galaxy which includes the sun
a star that is nearest to the earth
None of these
poor reflection from the mirrors
scattering of light from the mirrors
absorption of some light by the mirrors
absorption of light by the atmosphere
Galileo
Bhaskara
Aryabhatta
Ptolemy
does not allow the lightning to fall on the building at all
drives away the charged clouds
forces the lightning to fall on other buildings near that building
conducts the electric charges to the ground when lightning strikes the building