General Science

Q2381.Red light signal is used as a danger signal because

Q2382.Blue colour of the sky is due to

Q2383.The Sun appears red during Sunset

Q2384.The red colour of the Sun at Sunset and Sunrise is due to

Q2385.An astronaut sees the colour of the sky as

Q2386.When we see the sky from a plane in high altitude, then it seems

Q2387.Sea seems blue due to

Q2388.The concept of expanding universe is based on

Q2389.Suppose a rocketship is proceeding from the Earth at a speed of 2/10th the velocity of light. A light in the rocketship appears blue to the passengers on the ship. What colour would it appear to an observer on the Earth?

Q2390.In driving a car which type of mirror would you like to use for observing traffic at your back?

Q2391.For shaving, one uses

Q2392.In order to avoid Sunlight, which of the following colour combination for an umbrella is most appropriate?

Q2393.The image formed by astronomical telescope is

Q2394.The number of images of an object placed between two parallel mirrors is

Q2395.When a mirror is rotated by an angle q, the reflected ray will rotate by

Q2396.Light is made of seven colours. What is the method of separating the colours?

Q2397.The correct order of colours in a rainbow is

Q2398.Which one of the following colours is seen in the middle of a Rainbow?

Q2399.The terminal colour bands of the rainbow are

Q2400.In which direction the rainbow is seen at 12 noon?