The Painted Image

Last month Joe the painter painted many rooms. He used 3 coats of paint on one third of the rooms he painted. On two fifths of the remaining rooms he used 2 coats of paint, and he only used 1 coat of paint on the remaining 24 rooms. What was the total number of coats of paint Joe painted last month?

The painting 'Damayanthi' was painted by ………….

An object AB is kept in front of a concave mirror as shown in Fig. (i) Complete the ray diagram showing the image formation of the object. (ii) How will the position and intensity of the image be affected surface is painted black ?

An object AB is kept in front of a concave mirror as shown in Fig. (i) Complete the ray diagram showing the image formation of the object. (ii) How will the position and intensity of the image be affected surface is painted black ?