Fringe width or angular width when Young's experiment is done in water

1. A.
   $4.9 \times 10^{-4}$ m
2. B.
   $5.8 \times 10^{-4}$ m
3. C.
   $6.3 \times 10^{-4}$ m
4. D.
   $8.6 \times 10^{-4}$ m

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1. A.
   $0.10^\circ$
2. B.
   $0.15^\circ$
3. C.
   $0.20^\circ$
4. D.
   $0.25^\circ$

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1. A.
   $4.9 \times 10^{-4}$ m
2. B.
   $6.3 \times 10^{-4}$ m
3. C.
   $8.6 \times 10^{-4}$ m
4. D.
   $5.8 \times 10^{-4}$ m

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1. A.
   $5.8$
2. B.
   $8.6$
3. C.
   $4.9$
4. D.
   $6.3$

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1. A.
   the fringe width will decrease
2. B.
   the fringe width will increase
3. C.
   the fringe width will remain unchanged
4. D.
   the fringe width first decreases and then increases

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