How is circular motion possible when we swirl the stone with horizontal force?
Actually, there are two forces acting at that time one that horizontal force and another centripetal force. So the resultant force of these two forces helps it to move in a circular path.
Why is paramecium immortal?
Paramecium undergoes binary fission and after many divisions, it undergoes conjugation and retrieves as new paramecium.
If white light is passed inside the glass and critical angle is set for yellow. What colors will emerge out of glass?
If the critical angle is set for yellow color. As the refractive index increases from red to violet. So the critical angle goes on decreasing.(sinC=1/refractive index) hence Critical angle is set for yellow so red, orange and green passes through the glass and other get reflected.