MHT CET · Physics · Thermal Properties of Matter
Two plane mirrors are perpendicular to each other. A ray after suffering reflection from the two mirrors will be
- A perpendicular to the original ray
- B parallel to the original ray
- C parallel to the first mirror
- D at \(45^{\circ}\) to the original ray
Answer & Solution
Correct Answer
(B) parallel to the original ray
Step-by-step Solution
Detailed explanation
Here, angular deviation
\(
\begin{aligned}
\delta &=2 \pi-2 \theta \\
&=2 \pi-2 \times \frac{\pi}{2}=\pi
\end{aligned}
\)
Hence, final emergent ray is parallel to incident ray.
\(
\begin{aligned}
\delta &=2 \pi-2 \theta \\
&=2 \pi-2 \times \frac{\pi}{2}=\pi
\end{aligned}
\)
Hence, final emergent ray is parallel to incident ray.
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
- When the battery across the plates of a charged condenser is disconnected and a dielectric slab is introduced between its plates then the energy storedMHT CET 2021 Medium
- A metal wire of length ' \(\mathrm{L}\) ' is bent to form a circular coil of number of turns 'n'. The coil is placed in magnetic field 'B' and current is passed through the coil. The maximum torque acting on the coil isMHT CET 2020 Medium
- Two point charges \(+8 q\) and \(-2 q\) are located at \(x=0\) and \(x=\mathrm{L}\) respectively. The location of a point on the \(x\)-axis from the origin, at which the net electric field due to these two point charges is zero isMHT CET 2024 Easy
- The force acting on the electron in hydrogen atom (Bohr' theory) is related to the principle quantum number ' \(n\) ' asMHT CET 2023 Medium
- Two S.H.Ms. are represented by equations \(\mathrm{y}_1=0.1 \sin \left(100 \pi \mathrm{t}+\frac{\pi}{3}\right)\) and \(\mathrm{y}_2=0.1 \cos (100 \pi \mathrm{t})\) The phase difference between the speeds of the two particles isMHT CET 2023 Medium
- If the maximum kinetic energy of emitted electrons in photoelectric effect is \(3 \cdot 2 \times 10^{-19} \mathrm{~J}\) and the work function for metal is \(6 \cdot 63 \times 10^{-19} \mathrm{~J}\), then stopping
potential and threshold wavelength respectively are
[Planck's constant \(\left.\mathrm{h}=6.63 \times 10^{-34} \mathrm{~J} . \mathrm{s}\right]\)
[Velocity of light \(\left.\mathrm{c}=3 \times 10^{8} \frac{\mathrm{m}}{\mathrm{s}}\right]\)
\(\left[\right.\) charge on electron \(\left.=1 \cdot 6 \times 10^{-19} \mathrm{C}\right]\)MHT CET 2020 Medium
More PYQs from MHT CET
- Which one of the following is based on convection?MHT CET 2023 Easy
- Given below are the steps involved in plant breeding program. Identify the correct sequence of these steps.
i. collection of variabilities
ii. Hybridization
iii. evaluation and selection of parents
iv. testing, release and commercialization of new cultivars.
v. selection and testing of superior recombinants.MHT CET 2025 Hard - The particular solution of the differential equation
\(\sin ^{2} y \frac{d x}{d y}+x=\cot y\) when \(x=0\) and \(y=\frac{3 \pi}{4}\) isMHT CET 2020 Easy - The approximate value of \(\tan ^{-1}(0.999)\) is (use \(\pi=3.1415\) )MHT CET 2024 Easy
- A stationary body explodes into two parts of masses ' \(\mathrm{M}_{1}\) ' and \({ }^{\prime} \mathrm{M}_{2}{ }^{\prime}\). They move in opposite directions with velocities ' \(v_{1}\) ' and ' \(v_{2}\) '. The ratio of their kinetic energies isMHT CET 2020 Easy
- Which one of the following statements is NOT true regarding crossing over during meiosis?MHT CET 2022 Hard