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Feeling centrifugal force
Tie a weight to a string about a metre in length and then whirl the weight around at arm's length. View the outward pull on the string. This is centrifugal force. Swap the string with a strong rubber band. Carefully whirl the weight on the rubber band. View the stretch in the rubber. This is caused by centrifugal force
explain compound microscope
Does sunlight reflected off a mirror enhance the temperature of the sun-rays? A standard planar mirror will not enhance the energy contained in the rays that reflect off it. In
(1) The first practical application for piezoelectric devices was sonar, first developed during worldwar1. Piezoelectric materials are as a source of ultrasonic waves. At sea, they
Ask question how to plan and design a lab to measure the maximum recombination time of ions produced by a flame
are thermo-electric thermometres fairly sensitive ?
Verify the principle of potentiometer. Illustrate a circuit diagram used to compare the e.m.f. of two primary cells. Write the formula used. How can the sensitivity of a potentiome
electric field
A horizontal ray hitting a prism with n=1.5, tip angle α=4 o . The ray will be deflected by an angle δ=(n-1)α. The ray is further reflected by a vertical mirror. Now, if I want to
Q What is photoelectric effect? Photoelectric release is the phenomena by which a good number of substances chiefly metals emit electrons under the influence of radiation such
Q State Joule's law of heating? The heat produced in a conductor is (i) Unswervingly proportional to the square of the current for a given R (ii) Unswervingly proportiona
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