JEE Main Physics question

A block of mass M is pulled along a horizontal frictionless surface by a rope of mass m. Force P is applied at one end of the rope. The force which the rope exerts on the block is

• (A)P/[M(m+M)]
• (B)P/(M−m)
• (C)Pm/(M−m)
• (D)PM/(m+M)Correct