JEE Mains · Physics · STD 12 - 9. Ray optics and optical instruments
Two plane mirrors are inclined to each other such that a ray of light incident to the first mirror \((M_1)\) and parallel to the second mirror \((M_2)\) is finally reflected from the second mirror \((M_2)\) parallel to the first mirror \((M_1).\) The angle between the two mirrors will be......\(^o\)
- A \(45\)
- B \(60\)
- C \(75\)
- D \(90\)
Answer & Solution
Correct Answer
(B) \(60\)
Step-by-step Solution
Detailed explanation
\(\theta \,=\,60^o\)
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
- If earth has a mass nine times and radius twice to the of a planet \(P\). Then \(\frac{v_e}{3} \sqrt{x}\; ms ^{-1}\) will be the minimum velocity required by a rocket to pull out of gravitational force of \(P\), where \(v_e\) is escape velocity on earth. The value of \(x\) isJEE Mains 2023 Medium
- An electric field \(\overrightarrow{\mathrm{E}}=4 \mathrm{x} \hat{\mathrm{i}}-\left(\mathrm{y}^{2}+1\right) \hat{\mathrm{j}}\; \mathrm{N} / \mathrm{C}\) passes through the box shown in figure. The flux of the electric field through surfaces \(A B C D\) and \(BCGF\) are marked as \(\phi_{I}\) and \(\phi_{\mathrm{II}}\) respectively. The difference between \(\left(\phi_{\mathrm{I}}-\phi_{\mathrm{II}}\right)\) is (in \(\left.\mathrm{Nm}^{2} / \mathrm{C}\right)\)
JEE Mains 2020 Medium - A block of \(\sqrt{3}\,kg\) is attached to a string whose other end is attached to the wall. An unknown force \(F\) is applied so that the string makes an angle of \(30^{\circ}\) with the wall. The tension \(T\) is \(...........\,N\) :(Given \(g =10\,ms ^{-2}\) )
JEE Mains 2023 Medium - A homogeneous solid cylindrical roller of radius \(R\) and mass \(M\) is pulled on a cricket pitch by a horizontal force. Assuming rolling without slipping, angular acceleration of the cylinder isJEE Mains 2019 Hard
- The ratio of maximum acceleration to maximum velocity in a simple harmonic motion is \(10\,s^{-1}\). At, \(t = 0\) the displacement is \(5\, m\). What is the maximum acceleration ? The initial phase is \(\frac{\pi }{4}\)JEE Mains 2017 Hard
- The diameter of the objective lens of microscope makes an angle \(\beta \) at the focus of the microscope. Further, the medium between the object and the lens is an oil of refractive index \(n\). Then the resolving power of the microscopeJEE Mains 2014 Medium
More PYQs from JEE Mains
- Let \(y = y(x)\) be the solution of the differential equation \((\tan x)^{1/2}\,dy = (\sec^3 x - (\tan x)^{3/2} y)\,dx\), \(0 < x < \dfrac{\pi}{2}\), \(y\left(\dfrac{\pi}{4}\right) = \dfrac{6\sqrt{2}}{5}\). If \(y\left(\dfrac{\pi}{3}\right) = \dfrac{4}{5}\alpha\), then \(\alpha^4\) equals _______.JEE Mains 2026 Hard
- The inverse function of \(f(\mathrm{x})=\frac{8^{2 \mathrm{x}}-8^{-2 \mathrm{x}}}{8^{2 \mathrm{x}}+8^{-2 \mathrm{x}}}, \mathrm{x} \in(-1,1),\) isJEE Mains 2020 Hard
- A Carnot's engine working between \(400\, K\) and \(800\, K\) has a work output of \(1200\, J\) per cycle. The amount of heat energy supplied to the engine from the source in each cycle is ........... \(J\)JEE Mains 2021 Medium
- A deuteron and a proton moving with equal kinetic energy enter into to a uniform magnetic field at right angle to the field. If \(r_{d}\) and \(r_{p}\) are the radii of their circular paths respectively, then the ratio \(\frac{r_{d}}{r_{p}}\) will be \(\sqrt{ x }: 1\) where \(x\) is ..........JEE Mains 2022 Medium
- Consider an A.P.: \( a_1, a_{2},....,a_{n} \), \( a_{1}>0 \). If \( a_{2}-a_{1}=\frac{-3}{4} \), \( a_{n}=\frac{1}{4} a_{1} \) and \(\sum_{i=1}^n a_i=\frac{525}{2}\) , then \(\sum_{i=1}^{17} a_i\) is equal toJEE Mains 2026 Medium
- An object of mass 8 kg is hanging from one end of a uniform rod \(C D\) of mass 2 kg and length 1 m pivoted at its end \(C\) on a vertical wall as shown in figure. It is supported by a cable \(A B\) such that the system is in equilibrium. The tension in the cable is:
(Take \(g=10 m s ^{-2}\) )
JEE Mains 2023 Medium