Excuse me kuldeep don't blame nitin sir understand if there is mistake in lecture then you can correct it but why are you saying this that "worse mistake by nitin sir" don't forgot that mistakes are done...View Question
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it means sir that stars wee see in night are not present yet. The stars are not actually there but we can see them why? one more thing sir that questions are not can be explained but answer can be explainedView Question