Concepts Of Physics MCQ Edition [Volume 1]PhysicsGeometrical Optics
A small block of mass m and a concave mirror of radius R fitted with a stand lie on a smooth horizontal table with a separation d between them. The mirror together with its stand has a mass m . The block is pushed at t = 0 towards the mirror so that it starts moving towards the mirror at a constant speed V and collides with it. The collision is perfectly elastic. Find the velocity of the image (a) at a time t d/V .
Options
- A(a) R^2 V [2(d - Vt) - R]^2 (b) V (1 - R^2 [2Vt - d - R]^2 )
- B(a) R^2 V [2(d - Vt) + R]^2 (b) V (1 - R^2 [2Vt - d + R]^2 )
- C(a) R V [2(d - Vt) - R]^2 (b) V (1 - R [2Vt - d - R]^2 )
- D(a) R^2 V [d - Vt - R]^2 (b) V (1 - R^2 [Vt - d - R]^2 )
Correct answer
A. (a) R^2 V [2(d - Vt) - R]^2 (b) V (1 - R^2 [2Vt - d - R]^2 )
Step-by-step solution
(a) R^2 V [2(d - Vt) - R]^2 (b) V (1 - R^2 [2Vt - d - R]^2 )