Note: 1. Answer all the Questions.
2. Each Question carries 2 Marks 8 * 2 = 16
21. Why is it difficult to shoot a fish swimming in water?
22.
Image
fig-17
From the above figure answer the
following questions.
1) Write the nature of the image?
ii) What is the lens shown in the figure?
23. How many types of eye defects are there ? Name them.
24. Define Dobereiner's law of traids with one example,
25. Explain the formation of Na molecule.
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answer will be 0 23468199386₹;29
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