In an optical fibre, the signal is transmitted
in a straight line path
in a curved path
due to total internal reflection
due to total internal reflection
C.
due to total internal reflection
If there were no gravity, which of the following will not be there for a fluid?
Viscosity
Surface Tension
Pressure
Pressure
Which one among the following components is used as an amplifying device?
Transformer
Diode
Capacitor
Capacitor
Anemometer is an instrument meant for measuring .............
velocity
air masses
wind speed
wind speed
The spring balance works on the principle of ............
Boyle's Law
Hooke's Law
Bernoulli's principle
Bernoulli's principle
Sun appears red in colour at sunrise and sunset due to
the fact that sun emits only red colour at that time
red light having longer wave length scatters away
that sun comes out of the mountains
that sun comes out of the mountains
Which one of the following is not a non-conventional source of energy?
Solar Energy
Natural Gas
Wind Energy
Wind Energy
Which one of the following processes is responsible for the glittering of air bubble rising through water?
Reflection of light
Refraction of light
Total internal reflection of light
Total internal reflection of light
