A boy is pushing a box on a horizontal floor from a position of rest to rest while moving on a straight line. Consider the three phases of motion. Floor is rough with a small friction coefficient. (i) Initially a constant hard push on the box to get it moving and attain a maximum velocity. (ii) Mild push to keep the box moving with constant velocity. (iii) To pull back the box to bring it to stop with same retardation. Which of the following graphs is CORRECT?
Refraction of Light
Refraction is a change in the direction of light rays when they travel from one medium to another. It is the bending of light when it goes through different media.
Angle of Refraction
Light is considered by many scientists to have dual nature, both particle nature and wave nature. First, Particle nature is one in which we consider a stream of packets of energy called photons. Second, Wave nature is considering light as electromagnetic radiation whereas part of it is perceived by humans. Visible spectrum defined by humans lies in a range of 400 to 700 nm wavelengths.
Index of Refraction of Diamond
Diamond, the world’s hardest naturally occurring material and mineral known, is a solid form of the element carbon. The atoms are arranged in a crystal structure called diamond cubic. They exist in a huge variety of colours. Also, they are one of the best conductors of heat and have a very high melting point.
hi please solve this question, there are two images, please check both the images, please make sure the answer is correct, please note multiple options can be correct. please solve it quickly.
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