the eye lens being thin
the eye lens being thick
lack of symmetry in the curvature of the eye preventing rays of light from being brought to a common focus
the pupil being very small
C. lack of symmetry in the curvature of the eye preventing rays of light from being brought to a common focus
umbra
penumbra
image
black portion of light
glass allows the heat radiations of shorter wavelengths from the sun to pass through
the plants absorb them - these shorter wavelengths - and reradiate them in the form of longer wavelengths
the longer wavelengths cannot penetrate through the glass walls
All the above
Volts
Amperes
ohms
coulombs
find out the specific gravity of liquids
measure the volumes of liquids
test the purity of milk
determine the strength of acid in car batteries
Cosmic rays
Infrared rays
All radiations of light
Ultra violet rays coming from the sun
a stone
a piece of wood
a feather
all will reach the ground at the same time
Pascal's law
Bernoulli's law
Archimedes' law
Boyle's law
the ampere
the volt
the ohm
the coulomb
a planet
a meteor
a star
a comet
Uranium that is very pure
Uranium in which the concentration of the isotope U-238 is more than in the naturally occuring uranium
Uranium in which the concentration of the isotope U-235 is more than in the naturally occuring uranium
None of the above
Thorium
Uranium
Plutonium
Radium
protons
electrons
neutrons
positrons
the least scattered red colour reaching the eye
the dispersion of sun light occurred in air molecule in atmosphere
the diffraction of sunrays in atmospheric layers
interference of all the rays coming from the sun
the eye lens being thin
the eye lens being thick
lack of symmetry in the curvature of the eye preventing rays of light from being brought to a common focus
the pupil being very small
poor reflection from the mirrors
scattering of light from the mirrors
absorption of some light by the mirrors
absorption of light by the atmosphere
short sight
long sight
astigmatism
presbyopia
quinine sulphate solution
paraffin oil
fluorescein solutions
All the above
the valve filaments have low resistance
valve-radio sets work at a higher voltage
transistor set has a low resistance
filaments of the valves cake time to beat up and function
speed of sound is greater in steel than in air
speed of sound is greater in air than in steel
part of sound waves is reflected between rail tracks
the boy's ears are at a different distance from the source
conduction and convection only
conduction and radiation only
convection and radiation only
conduction, convection and radiation
powerful X-rays falling on the earth from space
ultraviolet rays from the sun
gamma rays from radioactive minerals
very energetic radiation falling upon the earth from outer space consisting chiefly of charged particles
collision between molecules of filled gas under electric current
heavy current
vacuum inside the tube
falling of ultra violet rays on the white inner coating of the tube
both walls are silvered on the vacuum side
there is vacuum between the double walls
the cork is a poor conductor of heat
of all the above
an ammeter
a rheostat
a voltmeter
a voltameter
electroplating
electrotyping
electrolysis
distillation
increases
decreases
remains the same
first increases then decreases
a high resistance
a very low resistance
no resistance at all
resistance of 400 ? w
mechanical energy is converted to light energy
mechanical energy is converted to heat energy
mechanical energy is converted to electrical energy
electrical energy is converted to mechanical energy
alcohol is a poor conductor of heat
alcohol can be coloured for its level to be seen easily
its freezing point is very low
it will not stick to the glass tube
Rutherford
Neils Bohr
Albert Einstein
JJ Thompson