The vast amount of sea weeds present in oceans may produce an endless source of
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An object is placed at the centre of curvature of a concave mirror. Its image is formed at
Who was the exponent of Yog Darshan?
A team of scientists from which organisation has entered China, to probe the source of Coronavirus?
An electron loses potential energy when it
Match the following.
India was declared free from which infective eye disorder on 9 December, 2017?
One nanometer is