Physics
A solid needle placed horizontally on the surface of the water floats due to

Surface tension of water
Capillary action
Viscosity of water
Water pressure

ANSWER DOWNLOAD EXAMIANS APP

Physics
In total internal reflection, the light travel from

Denser to rarer medium and it occurs with loss of intensity
Rarer to denser medium and it occurs with loss of intensity
Denser to rarer medium and it occurs with no loss of intensity
Rarer to denser medium and it occurs with no loss of intensity

ANSWER DOWNLOAD EXAMIANS APP