A glass cube of side length 'a' and p = 1.5 isplaced on a surface. A small light bulb is at thecentre of base of cube. What minimum area of sidewall of the cube should be painted so that no lightcomes out of the side walls of the cube? (Consideronly single reflection or refraction)

A glass cube of side length 'a' and p = 1.5 isplaced on a surface. A s

1.	A glass cube of side length 'a' and p = 1.5 isplaced on a surface. A small light bulb is at thecentre of base of cube. What minimum area of sidewall of the cube should be painted so that no lightcomes out of the side walls of the cube? (Consideronly single reflection or refraction)
Answer» A glass cube of side length 'a' and p = 1.5 is placed on a surface. A small light bulb is at the centre of base of cube. What minimum area of side wall of the cube should be painted so that no light comes out of the side walls of the cube? (Consider only single reflection or refraction)