An object placed at the bottom of a well full of clear wa...
An object placed at the bottom of a well full of clear water appears closer to the surface due to?
diffraction
reflection
refraction
polarization
Correct answer is C
Real depth and apparent dept is due to refraction
A metal rod has a length of 100cm at 200°C. At what temperature will its length be 99.4cm. If th...
The total resistance measured at PQ in the diagram above is ...
Which of the following is used in a nuclear reactor to slow down fast moving neutrons? ...
The difference observed in solids, liquids and gases can be accounted for by ...