Question
Red light is used for signals because it has
–Solution
Red is the international colour of stop signs and stop lights on highways and intersections because it is scattered the least by air molecules. The effect of scattering is inversely related to the fourth power of the wavelength of a colour. Red has the highest wavelength of all the colours and is able to travel the longest distance through fog, rain, and the alike.
What is the atomic mass of carbon?
In a nuclear reactor, one of the following is used as a fuel.
The Weight of an object on Earth is 600 N. What will be its weight on moon?
What is the pH of pure water?
The energy of a photon is proportional to:
The period of revolution of a geo- stationary satellite is –
In the elastic range of a material under tension, the ratio of stress to strain:
Which of the following is a process in which water from any source change into vapour state ‘due to heat’?
Which of the following G-protein takes part in the regulation of vision?
Which of the following is an example of a chemical change?
Relevant for Exams:
