Fringe width when the wavelength, slit separation or screen distance changes

1. A.
   remains the same.
2. B.
   becomes $\frac{1}{10}$ times.
3. C.
   becomes $\frac{1}{20}$ times.
4. D.
   becomes $\frac{1}{90}$ times.

Tap an option to check your answer.

1. A.
   $\frac{D}{2}$
2. B.
   $\frac{D}{\sqrt{2}}$
3. C.
   2D
4. D.
   4D

Tap an option to check your answer.

1. A.
   2:3
2. B.
   1:2
3. C.
   4:9
4. D.
   9:4

Tap an option to check your answer.

1. A.
   both (C) and (D)
2. B.
   both (A) and (B)
3. C.
   only (A)
4. D.
   only (C)

Tap an option to check your answer.

1. A.
   decrease by $48\%$
2. B.
   decrease by $28\%$
3. C.
   increase by $48\%$
4. D.
   increase by $28\%$

Tap an option to check your answer.

1. A.
   towards the source by $37.5$ cm
2. B.
   towards the source by $62.5$ cm
3. C.
   away from the source by $62.5$ cm
4. D.
   away from the source by $37.5$ cm

Tap an option to check your answer.

1. A.
   $0.86$ mm
2. B.
   $0.96$ mm
3. C.
   $0.86$ cm
4. D.
   $0.96$ cm

Tap an option to check your answer.

1. A.
   zero
2. B.
   increase by $6479\ \mathrm{\mathring{A}}$
3. C.
   decrease by $589\ \mathrm{\mathring{A}}$
4. D.
   increase by $589\ \mathrm{\mathring{A}}$

Tap an option to check your answer.

1. A.
   decrease by 40%.
2. B.
   decrease by 60%.
3. C.
   increase by 60%.
4. D.
   increase by 40%.

Tap an option to check your answer.

1. A.
   remains unchanged.
2. B.
   becomes $2$ times the original.
3. C.
   becomes $3$ times the original.
4. D.
   becomes $6$ times the original.

Tap an option to check your answer.