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Echo vs. Reverberation
Sound is a mechanical wave that travels by a medium from a single location to other. This motion by a medium occurs as one particle of the medium interacts along with its neighbouring particle, transmitting the mechanical motion and corresponding energy to it. This transport of mechanical energy by a medium through particle interaction is what forms a sound wave a mechanical wave.
What is an intrinsic semiconductor? How can this material be changed into (i) P-type (ii) N-type extrinsic semiconductor? Describe with the help of energy band diagrams
A concentric tube heat exchanger is comprised of a thin wall inner tube of 25.4 mm diameter and an outer tube of 47 mm diameter. The heat exchanger is used for cooling lubricating
Explain the formation of newton ring
(a) You have studied that plane and convex mirrors produce virtual images of objects. Can they generate real image under some circumstances? Explain. (b) A virtual image we a
Q. Give basic postulate of special theory of relativity? A plane-convex lenses L of large radius of curvature with its convexities is placed on a plane glass plate P. When ligh
How much does automotive oil weigh? As rough guide engine oil generally weighs about 0.87 kg/litre or about 7.2 pounds per US gallon unfortunately a rough answer is the best th
Q. What is electrostatic shielding? i) It is the method of isolating a certain region of space from external field. ii) It is basis on the fact that electric field inside a
What do you understand by reverberation time an auditorium What do you mean by sound absorber. Give two examples for good absorbers.
Which colour has got the minimum angle of deviation?
An electron follows a helical path in a uniform mag-netic field of magnitude 0.300 T. The pitch of the path is 6.00 um, and the magnitude of the magnetic force on the elec-tron is
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