MHT CET · Physics · Ray Optics
When light enters glass from vacuum, then the wavelength of light
- A Decrease
- B Become zero
- C Remains same
- D Increases
Answer & Solution
Correct Answer
(A) Decrease
Step-by-step Solution
Detailed explanation
When a light enters glass from vacuum, then the wavelength of light decreases.
This is because the speed of light in glass is less than that in the vacuum.
From Snell’s law, the refractive index in a medium is given by
The glass is of higher refractive index than vacuum, so speed of light decreases and as the speed of light is directly proportional to the wavelength , so, the wavelength also be decreases.
This is because the speed of light in glass is less than that in the vacuum.
From Snell’s law, the refractive index in a medium is given by
The glass is of higher refractive index than vacuum, so speed of light decreases and as the speed of light is directly proportional to the wavelength , so, the wavelength also be decreases.
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
- An insulated container contains a monoatomic gas of molar mass ' \(m\) '. The container is moving with velocity ' \(V\) '. If it is stopped suddenly, the change in temperature is ( \(\mathrm{R}=\) gas constant)MHT CET 2024 Medium
- 1000 small water drops of equal size combine to form a big drop. The ratio of final surface energy to the total initial surface energy isMHT CET 2023 Medium
- The tourmaline crystalMHT CET 2011 Easy
- If the kinetic energy of a particle is increased to 16 times its previous value, the percentage change in the de-Broglie wavelength of the particle isMHT CET 2020 Medium
- A metal surface of work function \(1.13 \mathrm{eV}\) is irradiated with light of wavelength \(310 \mathrm{~nm}\). The retarding potential required to stop the escape of photoelectrons is [Take \(\frac{\mathrm{hc}}{}=1240 \times 10^{-9} \mathrm{SI}\) units]MHT CET 2023 Medium
- In Young's double slit experiment, the distance between the slits is 2 mm and the slits are 1 m away, from the screen. Two interference patterns can be obtained on the screen due to light of wavelength ' \(\lambda_1\) ' and ' \(\lambda_2\) ' respectively. The separation on the screen between the \(3^{\text {rd }}\) order bright fringes on the two interference patterns is ( \(\lambda_2=1 \cdot 5 \lambda_1\) )MHT CET 2025 Medium
More PYQs from MHT CET
- If \(\mathrm{A}=\left[\begin{array}{cc}2 & -2 \\ 4 & 3\end{array}\right]\), then \(\mathrm{A}^{-1}=\)MHT CET 2024 Easy
- A person is observing a bacteria through a compound microscope. For better observation and to improve its resolving power he shouldMHT CET 2023 Easy
- The principal value of \(\sin ^{-1}\left(\sin \left(\frac{2 \pi}{3}\right)\right)\) isMHT CET 2022 Medium
- If force \(\vec{F}=-3 \hat{i}+\hat{j}+5 \hat{k}\) acts along \(\vec{r}=7 \hat{i}+3 \hat{j}+\hat{k}\) then the torque acting at that point isMHT CET 2025 Medium
- The fundamental frequency of a sonometer wire is 50 Hz for some length and tension. If the length is increased by \(25 \%\) by keeping tension same then frequency change of second harmonic isMHT CET 2025 Easy
- Following criteria are used for construction of ecological pyramids EXCEPT ________.MHT CET 2025 Medium