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what is light
Difference among sound and light waves: (i) For propagation of sound rays material phase is required but no material medium is needed for light waves. (ii)Sound rays are long
Olbers' paradox (H. Olbers; 1826): If the Universe is uniform, infinite & unchanging then the whole sky at night would be bright regarding as bright as the Sun. The further yo
Two Stage Rocket Suppose the motion of the two-stage rocket or the corresponding velocity-time graph below. The rocket has two successive fuel stages followed through a free-fa
Musical Sounds: Sound that produces pleasant effects on our ear is known as musical sound. Such as sound of flute, violin.
A ray of light XY strikes a surface of a mirror ABCD at point P. a) Determine the path of the incident ray X-Y-P and the reflected ray P-Z and show this path in all views. (Hin
Zehnder's balance This ingenious balance, which is very beneficial for demonstration experiments, can be constructed in a few minutes using pins, razor blade, cork and knitting
Your dog is running around the grass in your back yard. He undergoes successive displacements 3.50 m south, 8.20 m northeast, and 15.0 m west. What is the resultant displacement?
Can you explain acceleration due to gravity?
Explain history of nuclear reaction? Bigger nucleus bust to from two lighter nucleus and two or three neutrons is known as nuclear fission used for making atom bomb two lighter
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