Download App

Wave Optics — Physics STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 SciencePhysicsWave Optics1 Mark
MCQ
In Young's double slit experiment, the interference pattern obtained with white light will be:
  • A
    The central fringe bright and alternate bright and dark fringes.
  • ✓
    The central fringe achromatic and coloured fringes for small path difference.
  • C
    The central fringe dark
  • D
    The central fringe coloured
✓

Answer

Correct option: B.
The central fringe achromatic and coloured fringes for small path difference.

If white light is used a white centre fringe is observed, but all the other fringes have coloured edges, the blue edge being nearer the centre. Eventually the fringes overlap and a uniform white light is produced.

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

More "M.C.Q (1 Marks)" from Wave Optics→Wave Optics — all question types→Physics STD 12 Science question papers→Gujarat Board STD 12 Science question papers→Gujarat Board question paper generator→

Similar questions

Assertion : A red object appears dark in the yellow light.

Reason : The red colour is scattered less.

→
In Young's interference experiment, if the slits are of unequal width, then:
→
A rectangular block of glass $\text{ABCD}$ has a refractive index $1.6.$ A pin is placed midway on the face $AB ($Fig$)$. When observed from the face $AD$, the pin shall:
→
A small current element of length $d \ell$ and carrying current is placed at $(1,1,0)$ and is carrying current in ' $+ z$ ' direction. If magnetic field at origin be $\overrightarrow{ B }_1$ and at point $(2,2,0)$ be $\overrightarrow{ B }_2$ then
→
A convex lens of focal length $12 cm$ is made of glass of $\mu = \frac{3}{2}$. What will be its focal length when immersed in liquid of $\mu = \frac{5}{4}$.......$cm$
→
Three bulbs of 40W, 60W and 100W are arranged in series with 220V. Which bulb has minimum resistance
→
Solid targets of different elements are bombarded by highly energetic electron beams. The frequency $(f)$ of the characteristic $X-$ rays emitted from different targets varies with atomic number $Z$ as
→
A cell of emf $6\, V$ and resistance $0.5\, ohm$ is short circuited. The current in the cell is ............... $amp$
→
A concave and convex lens have the same focal length of $20 cm$ and are put into contact to form a lens combination. The combination is used to view an object of $5 cm$ length kept at $20 cm $ from the lens combination. As compared to the object, the image will be
→
The kinetic energy of an electron revolving around a nucleus will be
→