Download App

Wave Optics — Physics STD 12 Science — Question

Rajasthan BoardEnglish MediumSTD 12 SciencePhysicsWave Optics1 Mark
Question
In an interference experiment, third bright fringe is obtained at a point on the screen with a light of 700 nm. What should be the wavelength of the light source in order to obtain 5th bright fringe at the same point(a) 500 nm(b) 630 nm (c) 750 nm(d) 420 nm
       
✓

Answer

(d) 420 nm

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→Rajasthan Board STD 12 Science question papers→Rajasthan Board question paper generator→

Similar questions

A varying current in a coil changes from 10 amp to zero in 0.5 sec. If average EMF is induced in the coil is 220 volts, the self inductance of coil is(a) 5 H(b) 10 H(c) 11 H(d) 12 H
       
→
The direction of ray of light incident on a concave mirror is shown by PQ while directions in which the ray would travel after reflection is shown by four rays marked 1, 2, 3 and 4 (Fig). Which of the four rays correctly shows the direction of reflected ray?
→
Figure shows the displacement-time graph of a particle moving on the $X-$axis.
  1. The particle is continuously going in positive $x$ direction.
  2. The particle is at rest.
  3. The velocity increases up to a time to, and then becomes constant.
  4. The particle moves at a constant velocity up to a time to, and then stops.
→
The value of force along on a charged particle in electric tied is :
→
As an electron makes a transition from an excited state to the ground state of a hydrogen - like atom/ion?
→
The value of angle of dip at the earth's magnetic pole is :
→
The half$-$life of $215_{At}$ is $100\mu s$. The time taken for the radioactivity of a sample of $215_{At}$ to decay to $1/16^{th}$ of its initial value is
→
What causes changes in the colours of the soap or oil films for the given beam of light(a) Angle of incidence(b) Angle of reflection(c) Thickness of film(d) None of these
 
 
 
 
→
$\text{ABC}$ is an equilateral triangle. Charges $+ q$ are placed at each corner. The electric intensity at $O$ will be
→
A 220 volt, 1000 W bulb is connected across a 110 volt mains supply. The power consumed will be(a) 1000 W(b) 750 W(c) 500 W(d) 250 W
       
→