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Answers
1. Convex
2.25 cm
3. Iris
It takes more time to answer all these questions . I would suggest the answers for your questions with NCERT textbook page no.
4. pg.no.: 188
5.pg.no.:a 196,b197
6. pg.no.:193
7.a.)pg.no.193,
Answer
b. Dispersion, c. Spectrum
8.Starting page
9.189
10.)195
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Answer:
first answer is convex lens second 25
Explanation:
third ciliary muscles 4 the ability of an eye to see the objects by adjusting the focal length is known as power of accommodation 5 because the wavelength of blue colour is lower but it is scattered larger area b. seven colour 6. violet band hai compare red colour band l e a s t a person can't unable to see the distant object but can see clearly nearby object is known as myopic eye and it can be corrected by using concave lens