Physics
Frictional force acts in

All the directions
The same direction as the motion
The opposite direction of the motion
Upward direction

ANSWER DOWNLOAD EXAMIANS APP

Physics
The blue colour of sky is due to

Refraction of sunlight
Reflection of sunlight
Scattering of shorter wavelengths of sunlight in the atmosphere
Scattering of longer wavelengths of sunlight in the atmosphere

ANSWER DOWNLOAD EXAMIANS APP

Physics
The sky appears blue because

All colours interfere to produce blue
The atmosphere scatters blue colour more than the others
It is actually blue
In white light, the blue component dominates

ANSWER DOWNLOAD EXAMIANS APP