Grade 12th pass7 grade science
(a) A boy with a mouth 5 cm wide stand 2 m away from a plane mirror. Where is his image and how wide is the image of his mouth ? (b) The boy walks towards the mirror at a speed of 1 m/s. At what speed does his image approach him?
(a) A boy with a mouth 5 cm wide stand 2 m away from a plane mirror. Where is his image and how wide is the image of his mouth ? (b) The boy walks towards the mirror at a speed of 1 m/s. At what speed does his image approach him?
