Q9 of 45 Page 301

Which part of the human eye helps in changing the focal length of the eye lens?

The crystalline lens attached to the ciliary muscles that help in changing the focal length of the lens.



Fig. Contraction and relaxation of eye lens due to ciliary muscles


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In the arrangement shown in the figure, there are two coils wound on anon-conducting cylindrical rod. Initially the key is not inserted. Then the key is inserted and later removed. Then, which of the following statement is correct?

a. The deflection in the galvanometer remains zero throughout.


b. There is a momentary deflection in the galvanometer but it dies out shortly.



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