Question

Please answer according to class 10 level

Answer 1

ans 2-Focal length of a thin lens depends on the refractive index of material of the lens with respect to the surrounding material. Suppose, on one side of the lens we have medium of absolute refractive index n1, and on the other side the medium of absolute refractive index n3.

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Answer 2

3) the equation for nuclear fission is the uranium is bombarded with 1 single neutron the products are huge energy is produced