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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.
With the help of a ray diagram, explain the formation of the final image of an object in a compound microscope. Derive a mathematical expression for its magnifying power.
Laue pattern (M. von Laue): The pattern generated on a photographic film while high-frequency electromagnetic waves (such as x-rays) are fired at a crystalline solid.
Doppler Effect Describing the classical Doppler Effect for sound waves. The Doppler Effect is a means through that wave properties (specifically frequencies) are influenced thr
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what are advantages and disadvantages for the six''s thermometer
Surface tension is described as the force per unit length in the plane of a liquid surface, operating at right angles on both sides of the imaginary line drawn on the surface T
Q. What is the density of energy states in metals? Obtain an expression for the density of states for free electron gas in metals. Ans. Density of energy state is define
give examples of like and unlike parallel forces
A particle is projected from ground with velocity 40sqrt2m/s.find- a)velocity and b)displacement of particle after 2sec .Take g=10m/s^2 Ans) velocity v=u+at a=-g v=40√2-10*2
Electric Field of an Oscillating Charge An electric charge is executing simple harmonic motion, and the animation displays the electric field lines around it.
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