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Q. Write any three applications of laser in industry.
Industrial applications
(i) The laser beam is utilized to drill extremely fine holes in diamonds hard sheets etc.
(ii) They are as well used for cutting thick sheets of hard metals and welding.
(iii) The laser beam is utilized to vaporize the unwanted material during the manufacture of electronic circuit on semiconductor chips.
(iv) They can be utilized to test the quality of the materials.
Q. What are the wave fronts? Answer:- (Physics) A wave front is an fantasy surface joining all points in space that are reached at the same instant by a wave propagating th
Q Define: mobility. Give its unit. The mobility is defined as the drift velocity obtains per unit electric field. The unit of a mobility m 2 V 1s 1.
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