Download App

Light Waves — Physics STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 SciencePhysicsLight Waves3 Marks
Question
If the separation between the slits in a Young's double slit experiment is increased, what happens to the fringe-width? If the separation is increased too much, will the fringe pattern remain detectable?
✓

Answer

The fringe width in Young's double slit experiment depends on the separation of the slits.$\text{x}=\frac{\lambda\text{D}}{\text{d}},$
where$\lambda$ = wavelength
x = fringe width D = distance between slits and screen d = separation between slits On increasing d, fringe width decreases. If the separation is increased too much, the fringes will merge with each other and the fringe pattern won't be detectable.

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 "3 Marks Question" from Light Waves→Light Waves — all question types→Physics STD 11 Science question papers→Gujarat Board STD 11 Science question papers→Gujarat Board question paper generator→

Similar questions

A U-shaped wire is dipped in a soap solution, and removed. The thin soap film formed between the wire and the light slider supports a weight of $1.5 × 10–2N$ (which includes the small weight of the slider). The length of the slider is $30cm$. What is the surface tension of the film?
→
Estimate the change in the density of water in ocean at a depth of $400m$ below the surface. The density of water at the surface = $1030kg/m^3$ and the bulk modulus of water = $2 \times 10^9N/m^2$.
→
A hydrogen atom emits ultraviolet radiation of wavelength 102.5nm. What are the quantum numbers of the states involved in the transition?
→
A train approaching a platform at a speed of 54km/h sounds a whistle. An observer on the platform finds its frequency to be 1620Hz. The train passes the platform keeping the whistle on and without slowing down. What frequency will the observer hear after the train has crossed the platfrom? The speed of sound in air = 332m/s.
→
The mass and diameter of a planet are twice of those of the earth. What will be the period of oscillation of a pendulum on this planet, if it is a second's pendulum on the earth?
→
A ship is moving at a speed of $56km/ h^{-1}$. One second later, it is moving at a speed of $58km/ h^{-1}$. What is its acceleration?
→
A jet airplane travelling at the speed of $500 km h^{–1}$ ejects its products of combustion at the speed of $1500km h^{–1}$ relative to the jet plane. What is the speed of the latter with respect to an observer on the ground?
→
Find out the increase in moment of inertia I of a uniform rod $($coefficient of linear expansion $\alpha)$ about its perpendicular bisector when its temperature is slightly increased by $\Delta\text{T}.$
→
Four identical cylindrical columns of steel support a big structure of mass $50,000kg$. The inner and outer radii of each column are $30cm$ and $40cm$ respectively. Assuming the load distribution to be uniform, calculate the compressional strain of each column. The Young's modulus of steel is $2.0 \times 10^{11}Pa$.
→
Why does a metal bar appear hotter than a wooden bar at the same temperature? Equivalently it also appears cooler than wooden bar if they are both colder than room temperature.
→