Search any question & find its solution
Question:
Answered & Verified by Expert
Consider sunlight incident on a slit of width $10^4 Å$. The image seen through the slit shall
Options:
Solution:
2534 Upvotes
Verified Answer
The correct answer is:
be a fine sharp slit white in colour at the centre
be a fine sharp slit white in colour at the centre
As given that the width of the slit
$$
\begin{aligned}
&=10^4 Å=10000 Å \\
&=10^4 \times 10^{-10} \mathrm{~m}=10^{-6} \mathrm{~m}=1 \mu \mathrm{m}
\end{aligned}
$$
Wavelength of visible sunlight varies from $4000 Å$ to 8000
$Å$.
Thus the width of slit is $10000 Å$ comparable to that of wavelength visible light i.e., $8000 Å$. So diffraction occurs with maxima at centre. Hence at the centre all colours appear i.e., mixing of colours form white patch at the centre.
$$
\begin{aligned}
&=10^4 Å=10000 Å \\
&=10^4 \times 10^{-10} \mathrm{~m}=10^{-6} \mathrm{~m}=1 \mu \mathrm{m}
\end{aligned}
$$
Wavelength of visible sunlight varies from $4000 Å$ to 8000
$Å$.
Thus the width of slit is $10000 Å$ comparable to that of wavelength visible light i.e., $8000 Å$. So diffraction occurs with maxima at centre. Hence at the centre all colours appear i.e., mixing of colours form white patch at the centre.
Looking for more such questions to practice?
Download the MARKS App - The ultimate prep app for IIT JEE & NEET with chapter-wise PYQs, revision notes, formula sheets, custom tests & much more.