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Q.1.What is the effect on focal length of a concave and a convex mirror as well as lenses when kept in water? Q.2. What is the least count of an ammeter and a voltmeter and how are they measured? Which voltmeter and ammeter is ideal for electric current measurements in lab and why (range, Least count)? why? Q.3.Whatis the focal length of a plane mirror? why?5064-551_7703_DSC04674.JPG

Pallavi Dhingra , 15 Years ago
Grade Upto college level
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