Consider sunlight incident on a slit of width 10^4 , A ^o . The i… - Vidyadip

MCQ

Consider sunlight incident on a slit of width ${10^4}\,\mathop A\limits^o $. The image seen through the slit shall

A
be a fine sharp slit, white colour at the centre
B
a bright slit white at the centre diffusing to zero intensities at the edges
✓
a bright slit white at centre diffusing to regions of different colours
D
only be a diffused slit white in colour

✓

Answer

Correct option: C.

a bright slit white at centre diffusing to regions of different colours

c
since the width of slit is comparable to that of wavelength diffraction occurs with maxima at centre. Therefore, at the centre all colours appear i.e, mixing of colours from white patch at centre

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

JEE STD 11 Science question papers→Gujarat Board STD 11 Science question papers→Gujarat Board question paper generator→

Similar questions

One end of rod of length $L$ is on horizontal plane. It is inclined at angle $\alpha$ to horizontal plane. When released its angular velocity after coming to horizontal plane is

$A$ uniform rod of mass $m$ and length $l$ hinged at its end is released from rest when it is in the horizontal position. The normal reaction at the hinge when the rod becomes vertical is :

A hydrogen atom in its ground state absorbs $10.2\ eV$ of energy. The orbital angular momentum is increased by

(Given Planck constant $h = 6.6 \times {10^{ - 34}}J - sec$)

The sun makes $0.5^o$ angle on earth surface. Its image is made by convex lens of $50 cm$ focal length. The diameter of the image will be......$mm$

If a liquid is heated in weightlessness, the heat is transmitted through

A string fixed at both ends is in resonance in its $2^{nd}$ harmonic with a tuning fork of frequency $f_1$. Now its one end becomes free. If the frequency of the tuning fork is increased slowly from $f_1$ then again a resonance is obtained when the frequency is $f_2$. If in this case the string vibrates in $n^{th}$ harmonic then

Each of the three graphs represents acceleration versus time for an object that already has a positive velocity at time $t_1$. Which graphs show an object whose speed is increasing for the entire time interval between $t_1$ and $t_2$ ?

Five cells each of emf $E$ and internal resistance $r$ are connected in series. Due to oversight one cell is connected wrongly. The equivalent internal resistance of the combination is ........... $r$

Which of the following acts as a circuit protection device?

A block of mass $10 \,kg$ is held at rest against a rough vertical wall $[\mu=0.5]$ under the action a force $F$ as shown in figure. The minimum value of $F$ required for it is ............ $N$ $\left(g=10 \,m / s ^2\right)$