He was enamoured of his own golden voice.

A person wants a real image of his own, 3 times enlarged. Where should he stand in front of a concave mirror of radius of curvature of 30cm.

A person wants a real image of his own, 3 times enlarged. Where should he stand in front of a concave mirror of radius of curvature of 30cm.

A person wants a real image of his own, 3 times enlarged. Where should he stand in front of a concave mirror of radius of curvature of 30cm.

A person wants a real image of his own, 3 times enlarged. Where should he stand infront of a concave mirror of radius of curvature 30 cm?

A boy hears an echo of his own voice from a distant hill after one second. The speed of sound in air is 350 m s^(-1) . What is the distance of the hill from the boy?

A boy hears an echo of his own voice from a distant hill after 1 s . The speed of sound is 340 m//s . What is the distance of the hill from the boy ?

A man bought a number of bicycles for Rs. 10,000 . He kept one for his own use and then sold the rest at a price of Rs. 50 more than the cost price. Besides getting his own bicycle for nothing,he made a profit of Rs. 450 . How many bicycles did he buy ?