logo

Ask Questions, Get Answers

X
 
Home  >>  JEEMAIN and NEET  >>  Physics  >>  Class12  >>  Wave Optics

Monochromatic light from narrow slits produce a interference pattern of fridge width $\beta$ , for a certain slit separation. When the slit separation is doubled and distance between screen and slit distance between screen and slit is made $\large\frac{1}{3}$ rd the fringe width

$(a)\;becomes \; 6\;times \\ (b)\;becomes \; \frac{1}{6} th\;times \\ (c)\;becomes \; 3\;times \\ (d)\;becomes \; \frac{1}{3} rd\;times $

1 Answer

Fringe width $= \beta =\large\frac{\lambda}{d}$
$\beta'= \large\frac{\lambda \Large\frac{D}{3}}{2d}$
$\beta'= \large\frac{\lambda D}{6d}$
$\beta' =\large\frac{1}{6}$$ \beta$
Hence b is the correct answer.
answered Jan 21, 2014 by meena.p
 

Related questions

Download clay6 mobile appDownload clay6 mobile app
...
X