Awesome idea Powerful Spot Light #short

Resolving power of light microscope is

The modern idea about ageing is that our body slowly loses the power of defence against the invasion of germs and pathogens. This proces starts by the disappearance of which organ?

A mirror is placed at the centre of a sphere and it is rotating with an angular speed omega . Incident light falls on the mirror at the centre of the sphere. Find out the linear speed of the light spot on the sphere?

A mirror is placed at the centre of a sphere and it is rotating with an angular speed omega . Incident light falls on the mirror at the centre of the sphere. Find out the linear speed of the light spot on the sphere?