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A pool has a uniform circular cross-section of radius 5m and uniform depth 1.4m. It is filled by a pipe which delivers water at a rate of 20 litres per sec. Calculate,in minutes, the time taken to fill the pool. If the pool is emptied in 42min. by another cylindrical pipe through which water flows at 2m per sec, calculate the radius of the pipe in cm.
explain the eye defects and their corrections.
what is the resolving power of the microscope and telescope?
Draw the ray diagrmas for the formation of image in the cases of Compound Microscope, telescope,
and simple Microscope and also write their their magnification powers.
please give the answers in detail.
A meter long tube open at one end with a movable piston at the other end shows ressonance with a fixed frequency source ( a tuning fork of frequency 340Hz) when the tube length is 25.5cm or 79.3 cm. estimate the speed of sound in air at the temperature of the expperiment. the edge effect may be neglectd.