Brainly321117 Asked: December 2022 describe newtons disc experiment to show that white light is composed of seven spectrum colours why do seven colours combine to give almost white but not perfectly
Brainly321117 Asked: December 2022 a student uses a lens of focal length 50 cm and another of 20cm write the nature of and power of
Brainly321117 Asked: December 2022 What do you understand about the power of a lens? Write its SI unit. A student uses a lens of focal length 50 cm and another
Brainly321117 Asked: December 2022 Two lamps, one rated 100 W; 220V, and the other 60W; 220V, are connected in parallel to the electric mains supply. Find