Download App

Wave Optics — Physics STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 SciencePhysicsWave Optics1 Mark
MCQ
The slits in a Young's double slit experiment have equal widths and the source is placed symmetrically relative to the slits. The intensity at the central fringes is $I_0$. If one of the slits is closed, the intensity at this point will be
  • A
    $I_0$
  • ✓
    $I_0 / 4$
  • C
    $I_0/ 2$
  • D
    $4I_0$
✓

Answer

Correct option: B.
$I_0 / 4$
$I_0 / 4$

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

In $YDSE$ $a=2 \,mm , D=2\, m , \lambda=500\, nm .$ Find the distance of point on screen from central maxima where intensity becomes $50 \%$ of central maxima (in $\mu m$)
→
The power loss in an $AC$ circuit can be minimized by.
→
The capacitor $'C'$ is initially uncharged.  Switch $S_1$ is closed for a long time while $S_2$ remains open. Now at $t = 0$ , $S_2$ is closed while $S_ 1$ is opened. All the batteries are ideal and connecting wires are resistanceless. Find $INCORRECT$ statement
→
Resistance of tungsten wire at $150\,^oC$ is $133\,\Omega $. Its resistance temperature coefficient is $0.0045\,^oC$. The resistance of this wire at $500\,^oC$ will be .............. $\Omega$
→
The resultant reactance in an $L - C - R$ circuit is.
→
If a proton is projected in a direction perpendicular to a uniform magnetic field with velocity $v$ and an electron is projected along the lines of force, what will happen to proton and electron
→
A transmitting antenna at the top of a tower has height $32\, m$ and height of the receiving antenna is $50\, m$. What is the maximum distance between them for satisfactory communication in line of sight $(LOS)$ mode ?........$km$
→
A two metre wire is moving with a velocity of $1 m/ \sec$ perpendicular to a magnetic field of $0.5$ weber/m$^2$. The $\text{e.m.f.}$ induced in it will be
→
Relative permeability of iron is $5500,$  then its magnetic susceptibility will be
→
The wavelength of the most energetic $X-$ ray emitted when a metal target is bombarded by $100 KeV$ electrons is approximately.......$\mathop A\limits^o $
→