JEE Mains · Physics · STD 12 - 10. Wave optics
In a Young's double slit experiment, the separation between the slits is \(0.15\; \mathrm{mm}\). In the experiment, a source of light of wavelength \(589 \;\mathrm{nm}\) is used and the interference pattern is observed on a screen kept \(1.5\; \mathrm{m}\) away. The separation between the successive bright fringes on the screen is......\(mm\)
- A \(6.9\)
- B \(5.9\)
- C \(4.9\)
- D \(3.9\)
Answer & Solution
Correct Answer
(B) \(5.9\)
Step-by-step Solution
Detailed explanation
Finge width, \(\beta=\frac{\mathrm{D} \lambda}{\mathrm{d}}=\frac{1.5 \times 589 \times 10^{-9}}{0.15 \times 10^{-3}}\) \(=5.9 \times 10^{-3} \mathrm{m}\) \(=5.9 \mathrm{mm}\)
See the Complete Solution
Get step-by-step explanations for this and 2.5 Lakh+ more JEE, NEET & CET questions.
- Unlock all solutions
- Practice the full chapter
- Track accuracy across PYQs
4.8 rated on Google Play · 14,000+ reviews
More questions from Physics
- Capacitance of an isolated conducting sphere of radius \(R_{1}\) becomes \(n\) times when it is enclosed by a concentric conducting sphere of radius \(R_{2}\) connected to earth. The ratio of their radii \(\left(\frac{ R _{2}}{ R _{1}}\right)\) is:JEE Mains 2022 Hard
- Choose the correct option from the following options given belowJEE Mains 2022 Medium
- The resistance of an electrical toaster has a temperature dependence given by \(R\left( T \right) = {R_0}\left[ {1 + \alpha \left( {T - {T_0}} \right)} \right]\) in its range of operation. At \({T_0} = 300\,K,R = 100\,\Omega \) and at \(T = 500\,K,\,R = 120\,\Omega \). The toaster is connected to a voltage source at \(200\, V\) and its temperature is raised at a constant rate from \(300\) to \(500\, K\) in \(30\, s\). The total work done in raising the temperature isJEE Mains 2016 Hard
- An electron is moving under the influence of the electric field of a uniformly charged infinite plane sheet \(S\) having surface charge density \(+\sigma\). The electron at \(t=0\) is at a distance of 1 m from \(S\) and has a speed of \(1 m s ^{-1}\). The maximum value of \(\sigma\), if the electron strikes \(S\) at \(t=1 s\) is \(\alpha\left[\frac{m \epsilon_0}{e}\right] \frac{ C }{ m ^2}\). The value of \(\alpha\) is __________ .JEE Mains 2024 Medium
- A convex lens of focal length \(20\,cm\) is placed in front of convex mirror with principal axis coinciding each other. The distance between the lens and mirror is \(10\,cm\). A point object is placed on principal axis at a distance of \(60\,cm\) from the convex lens. The image formed by combination coincides the object itself. The focal length of the convex mirror is \(...cm\).JEE Mains 2022 Medium
- What is the position and nature of image formed by lens combination shown in figure? (\(f_1, f_2\) are focal lengths)
JEE Mains 2019 Hard
More PYQs from JEE Mains
- During the transition of electron from state A to state C of a Bohr atom, the wavelength of emitted radiation is \(2000 Å\) and it becomes \(6000 Å\) when the electron jumps from state B to state C. Then the wavelength of the radiation emitted during the transition of electrons from state A to state B is _______.JEE Mains 2025 Medium
- If the domain of the function \(\log _5\left(18 x-x^2-77\right)\) is \((\alpha, \beta)\) and the domain of the function \(\log _{(x-1)}\left(\frac{2 x^2+3 x-2}{x^2-3 x-4}\right)\) is \((\gamma, \delta)\), then \(\alpha^2+\beta^2+\gamma^2\) is equal to :JEE Mains 2025 Easy
- Suppose that a function \(f: R \rightarrow R\) satisfies \(f(x+y)=f(x) f(y)\) for all \(x, y \in R\) and \(f(1)=3 .\) If \(\sum \limits_{i=1}^{n} f(i)=363,\) then \(n\) is equal toJEE Mains 2020 Medium
- If the equation of the parabola with vertex \(\mathrm{V}\left(\frac{3}{2}, 3\right)\) and the directrix \(x+2 y=0\) is \(\alpha x^2+\beta y^2-\gamma x y-30 x-60 y+225=0\), then \(\alpha+\beta+\gamma\) is equal to :JEE Mains 2025 Easy
- A stationary observer receives sound from two identical tuning forks, one of which approaches and the other one recedes with the same speed (much less than the speed of sound). The observer hears \(2\; beats/sec\). The oscillation frequency of each tuning fork is \(v_{0}=1400 \;\mathrm{Hz}\) and the velocity of sound in air is \(350\; \mathrm{m} / \mathrm{s}\). The speed of each tuning fork is close toJEE Mains 2020 Hard
- Let [.] denote the greatest integer function. If \(\int_0^{e^3}\left[\frac{1}{\mathrm{e}^{\mathrm{x}-1}}\right] \mathrm{dx}=\alpha-\log _{\mathrm{e}} 2\), then \(\alpha^3\) is equal to _______ .JEE Mains 2025 Medium