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Making a simple reflecting telescope
A simple reflecting telescope can be made from a concave mirror obtained from a shaving mirror. The mirror is arranged wooden box of suitable size in such a way that it can be tilted at dissimilar angles. An upright made of wood is attached to the box so that its angle may also be varied. Two short focus lenses are fixed in corks which are then placed in a short length of mailing tube as an eye-piece. Then join this eye- piece attached to the wood upright exactly at the focal
REGULATIONS CONCERNING SAFETY AND HEALTH OF WORKERS IN INDUSTRIAL LABORATORIES The workers in industry engaged in using or producing chemicals, coal, high temperature, intense
What is Tongue? The tongue is a major organ. You will agree that the tongue precisely reflects the state of our digestive system. How? Well, you may have experienced that occas
Define Specific Defence Mechanism In the section on white blood cells, we learnt that whenever a germ or infection enters our body, the WBCs snap to attention and destroy the c
Define the Blood Groups We start our discussion by answering the question - do all of us have the same blood group? No, each individual has a different blood group. The differ
Question 1 What is medical evidence? What are the types of medical evidence? What are the precautions should be taken by a medical officer while issuing medical certificate? Q
Microbes: You should know that invisible microbes are present everywhere, because they can surviveeven under very inhospitable conditions. They are all around us, in the air
if a force of 26 n is exerted on two baLLS one with a mass of 0.52kg ands the other with mass of 0.78kg which ball will have the greater acceleration explain
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Explain the Hormones in the urine Increased or decreased production of a hormone in the body alters the amount of hormone or its degraded products excreted in the urine. For ex
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