Some of the features of the human eye that greatly help to refract light entering the eyes are

When both the object and its image move together in the same direction relative to the observer, then there is

The diagram above shows a magnetic field due to a

I. The colour of light depends on its frequency II. When white light is dispersed by a triangular prism, yellow is deviated more than green III. Rainbows are formed when rains fall heavily. Which of the above statements is/are correct about dispersion and colours?

A Force 18 N pulls a 40 kg mass on a horizontal floor at 0.3 ms\(^{-2}\). Find the coefficient of friction.