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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 longitudinal but light rays are transverse.
(iii) Wavelength of sound waves limits from 1.65 cm to 16.5 meter and for light wave it confines from 4000 Å to 2000 Å.
Disadvantages of D.C. Transmission of power 1. Electric power cannot be produced at high d.c. voltages because of commutation problem. 2. The d.c. voltage cannot be stepped
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to find coefficient of viscosity of a liquid using stok''s law
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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
What makes a flashlight suddenly become dim or bright when you shake it?
You watch a distant carpenter driving his nails into the side of a house at a regular rate of 1 stroke per second. You hear the sound of the blows exactly synchronized with the bl
representation of graphs
Imagine a car tire that contains 5.1 moles of air when at a gauge pressure of 2.1×105N/m2 (the pressure above atmospheric pressure) and a temperature of 27 °C. The temperature incr
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