MCQ
What happens to the fringe pattern when the Young’s double slit experiment is performed in water instead or air then fringe width
- ✓Shrinks
- BDisappear
- CUnchanged
- DEnlarged
✓
Answer
Correct option: A.
Shrinks
a
(a)${\beta _{water}} = \frac{{{\beta _{air}}}}{{{\mu _w}}}$
(a)${\beta _{water}} = \frac{{{\beta _{air}}}}{{{\mu _w}}}$
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
A small mass $'m'$ rests at the edge of a horizontal disc of radius $'R'$ . The coefficient of static friction between mass and the disc is $\mu $ . The disc is rotated about its axis at an angular velocity such that the mass slides off the disc and lands on the floor $'h'$ meters below. What was its horizontal distance of travel from the point it left the disc?
→Assertion : Standard optical diffraction gratings can not be used for discriminating between $X-$ ray wavelengths.
→Reason : The grating spacing is not of the order of $X-$ ray wavelengths.
If a wire of length $1\, meter$ placed in uniform magnetic field $1.5\, Tesla$ at angle ${30^o}$ with magnetic field. The current in a wire $10\, amp$. Then force on a wire will be.......$N$
→An object of mass $500\; \mathrm{g}$, intitally at rest acted upon by a variable force where $\mathrm{X}$ component varies with $\mathrm{X}$ in the manner shown. The velocities of the object at point $X=8 \;\mathrm{m}$ and $X=12\; \mathrm{m},$ would be the respective values
→A current of $2\,A$ flows through a wire of crosssectional area $25.0\,mm ^2$. The number of free electrons in a cubic meter are $2.0 \times 10^{28}$. The drift velocity of the electrons is $...............\times 10^{-6}\,ms ^{-1}$ (given, charge on electron $=1.6 \times 10^{-19}\,C$ )
→The wave length of light in visible part $({\lambda _V})$ and for sound $({\lambda _S})$ are related as
→The average life $T$ and the decay constant $\lambda $ of a radioactive nucleus are related as
→An observer starts moving with uniform acceleration $a$ toward a stationary sound source emitting a whistle of frequency $n.$ As the observer approaches source, the apparent frequency, heard by the observer varies with time as
→A wire carrying a current $I$ is placed inside a uniform magnetic field $\vec B=-B_0\hat k$. The shape of the wire is parabolic and has equation $Y = 2x -x^2.$ The force on the wire will be :
→A jet plane flies in the air because