Question

29. Complete the following sentences :
length
(a)If half part of a convex lens is covered, the focal length____change,but the intensity of image______
(b) A convex lens is placed in water. Its focal length
will_____
(c) The focal length of a thin convex lens is______
than that of a thick convex lens​

Answer 1

Answer:

1) is, not changed

2) change

3) changed

Explanation:

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Answer 2

Answer:

is not change

Explanation:

a b c d e f g h i