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SCIENCE

Which one of the metal is liquid at normal temperature- a) zinc b) mercury c) sodium d) water
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SCIENCE

The least distance of distinct vision for a young adult with normal vision is about a) 25 m b) cm  c) 25 cm d) m
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science

The far point of a myopic person is 80 cm in front of the eye . What is the nature and power of the lens required to correct the...
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science

The change in focal length of an eye lens is caused by the action of  A) Retina B) Iris C) Pupil D) Ciliary muscles
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science

The human eye forms the image of an object at its a) C0rnea                   b) iris          ...
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Probability

A box contains 20 balls out of which 12 are red and 8 are green . 5 balls are randomly drawn from the box with replacement . What is...
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