Akta kiss awashakta anuchad in hindi
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the convergent lens placed inside a cell filled with a liquid the lens has focal length 20cm when inner and its material has refractive index 1.5 if the liquid has refractive index 1.6 the focal length of the system.
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You conducted a research in your school on the eating habits of students from
Classes 5 to 12. Write a report for your school principal to present her/him with
your findings.
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