A man in an empty swimming pool has a telescope focussed at 4o'clock sun. When the swimming pool is filled with water, the man observes the setting sun through telescope. If sunrises and sets at 6 o'clock, then refractive index of water is

A man in an empty swimming pool has a telescope focussed at 4o'clock s

1.	A man in an empty swimming pool has a telescope focussed at 4o'clock sun. When the swimming pool is filled with water, the man observes the setting sun through telescope. If sunrises and sets at 6 o'clock, then refractive index of water is
Answer» `2/(SQRT(3))` `(3sqrt(3))/2` `(4sqrt(2))/3` NONE of these Answer :A

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A man in an empty swimming pool has a telescope focussed at 4o'clock sun. When the swimming pool is filled with water, the man observes the setting sun through telescope. If sunrises and sets at 6 o'clock, then refractive index of water is

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