Question

For finding the focal length of a convex lens by obtaining the image of a distant object, one should use as the object; A. a well-lit distant tree; B. window grill in the class room; C. any distant tree; D. a lighted candle kept at the other end of the table(Delhi - 2011)

Answer 1

Answer:

Melting glaciers add to rising sea levels, which in turn increases coastal erosion and elevates storm surge as warming air and ocean temperatures create more frequent and intense coastal storms like hurricanes and typhoons. ... Alarmingly, if all the ice on Greenland melted, it would raise global sea levels by 20 feet.the scientific study of the structure of substances and what happens to them in different conditions or when mixed with each other

Answer 2

Answer:

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