a concave mirror has radius of curvature of 34.0 cm .If the mirror is immersed in water (refractive index*1.33), what its focal length?
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the focal length will increase
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Answer:Answer: Ampere's swimming rule states that, "If a man swims along the wire carrying current such that his face is always towards the magnetic needle with current entering his feet and leaving his head, then the north pole of the magnetic needle is always deflected towards his left hand."
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