Question

Gaurav was travelling by car.He had to cover aa distance of 200ppp 4/5 km .After he covered 3/4 of distance , the car broke down . How much distance is still left

Answer 1

Light travels as waves. These are transverse waves, like the ripples in a tank of water. The direction of vibration in the waves is at 90° to the direction that the light travels. Light travels in straight lines, so if you have to represent a ray of light in a drawing, always use a ruler.