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Making a simple refracting telescope
To make a simple telescope, two cardboard tubes will be needed, one fitting inside the other. It is not possible to make a satisfactory telescope unless good lenses are available, a fact which was soon discovered by early experimenters.
A linen tester (sometimes a stamp magnifier also) has lenses which are achromatic, that is corrected for colour distortion. Like lens of focal length 2 or 3 cm will provide a suitable eye-piece when mounted in a cork with a hole in it.
Explain natural physics concerned about? Solution: Natural physics is the branch of physics which deals the physics related to nature.For example-physics related to sunlight,re
Describe working of Heat engine Heat engine is a device by which a system is made to undergo a cyclic process that results in conversion of heat to work. * It having of a
Photoelectric effect An effect described by A. Einstein that demonstrates that light appears to be built up of photons or particles. Light can do excite electrons (called phot
Define free vector
what is plane diffraction grating?
(i) Conservation of charge number and mass number : In the given nuclear reaction Mass number (A) → Before the reaction After the reaction
candela; cd The basic SI unit of luminous intensity described as the luminous intensity in a given direction of a source which emits monochromatic photons of frequency 540 x 1
compare the contributions of faraday and oersted to electromagnetic theory
Can you give the condition for dispersion without deviation and illustrate colour has got the maximum angle of deviation?
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