Download App

10. Wave optics — Physics STD 12 Science — Question

CBSE BoardEnglish MediumSTD 12 SciencePhysics10. Wave optics1 Mark
MCQ
In a Young's double slit experiment if there is no initial phase difference between the light from the two slits, a point on the screen corresponding to the fifth minimum has path difference
  • A
     $5 \frac{\lambda}{2}$
  • B
     $10 \frac{\lambda}{2}$
  • ✓
     $9 \frac{\lambda}{2}$
  • D
    $11 \frac{\lambda}{2}$
✓

Answer

Correct option: C.
 $9 \frac{\lambda}{2}$
c
Path difference for $n^{\text {th }}$ minima $=(2 n-1) \frac{\lambda}{2}$

For fifth minima $(n=5)=\frac{9 \lambda}{2}$

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 10. Wave optics→10. Wave optics — all question types→Physics STD 12 Science question papers→CBSE Board STD 12 Science question papers→CBSE Board question paper generator→

Similar questions

In the given circuit, the equivalent resistance between the terminal $A$ and $B$ is $........\Omega$.
→
A radio-isotope has a half- life of $5$ years. The fraction of the atoms of this material that would decay in $15$ years will be
→
A square loop of side $2a$ and carrying current I is kept in $xz$ plane with its centre at origin. A long wire carrying the same current I is placed parallel to $z-$axis and passing through point $(0, b , 0),( b >> a ) .$ The magnitude of torque on the loop about $z-$ax is will be
→
Neutrino is a particle, which is
→
A concave mirror of focal length f, has formed the image of magnification m, the distance of the object from the mirror is :
→
A 1mA beam of protons with a cross-sectional area of 0.5 sq. mm is moving with a velocity of $3\times 10^4 \mathrm{~ms}^{-1}$. Then charge density of beam is
→
If ${I_1}$ and ${I_2}$ be the size of the images respectively for the two positions of lens in the displacement method, then the size of the object is given by
→
The cut-in voltage for silicon diode is approximately
→
The near point of a hypermetropic person is $75\, cm$ from the eye. What is the power of the lens required to enable the person to read clearly a book held at $25\, cm$ from the eye?
→
Red light is generally used to observe diffraction pattern from single slit. If blue light is used instead of red light, then diffraction pattern
→