MHT CET · Physics · Ray Optics
For a ray of light, the critical angle is minimum when it travels from
- A air to glass.
- B glass to water.
- C water to glass.
- D glass to air.
Answer & Solution
Correct Answer
(D) glass to air.
Step-by-step Solution
Detailed explanation
\(\sin c=\frac{1}{\mu}\)
\(a\mu_{\mathrm{w}}=\frac{4}{3}, a \mu_{\mathrm{g}}=\frac{3}{2}, w \mu_{\mathrm{g}}=\frac{\mathrm{a} \mu_{\mathrm{g}}}{\mathrm{a} \mu_{\mathrm{w}}}=\frac{9}{8}\)
Critical angle will be maximum when refractive index of the denser medium w.r.t. the rarer medium is minimum.
\(w \mu_{8}=\frac{9}{8}\) is minimum
\(a\mu_{\mathrm{w}}=\frac{4}{3}, a \mu_{\mathrm{g}}=\frac{3}{2}, w \mu_{\mathrm{g}}=\frac{\mathrm{a} \mu_{\mathrm{g}}}{\mathrm{a} \mu_{\mathrm{w}}}=\frac{9}{8}\)
Critical angle will be maximum when refractive index of the denser medium w.r.t. the rarer medium is minimum.
\(w \mu_{8}=\frac{9}{8}\) is minimum
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
- The reciprocal of the total effective resistance of LCR a.c. circuit is calledMHT CET 2023 Easy
- The moment of inertia of a thin uniform rod of length and mass about an axis passing through a point at a distance of from one of its ends and perpendicular to the rod isMHT CET 2018 Medium
- ' P ' and ' Q ' are fixed points in same plane and mass ' m ' is tied by string as shown in figure. If the mass is displaced slightly out of this plane and released, it will oscillate with time period \((\mathrm{PQ}=2 \mathrm{~d}, \mathrm{PR}=\mathrm{QR}=\mathrm{L})\) (g=gravitational acceleration)
MHT CET 2025 Medium - The magnetic flux through a coil of resistance 'R' changes by an amount ' \(\Delta \phi\) 'in time ' \(\Delta t\) '. The amount of induced current and induced charge in the coil are respectivelyMHT CET 2024 Medium
- On closing an open organ pipe from one end, it is noticed that the frequency of third harmonic is \(50 \mathrm{~Hz}\) more than the fundamental frequency of vibration in open organ pipe. The fundamental frequency of open organ pipe isMHT CET 2022 Medium
- The equation of simple harmonic wave produced in the string under tension \(0.4 \mathrm{~N}\) is given by \(\mathrm{y}=4 \sin (3 \mathrm{x}+60 \mathrm{t}) \mathrm{m}\). The mass per unit length of the string isMHT CET 2021 Easy
More PYQs from MHT CET
- Let \(\overline{\mathrm{a}}=\hat{\mathrm{i}}+2 \hat{\mathrm{j}}-\hat{\mathrm{k}}\) and \(\overline{\mathrm{b}}=\hat{\mathrm{i}}+\hat{\mathrm{j}}-\hat{\mathrm{k}}\) be two vectors. If \(\overline{\mathrm{c}}\) is a vector such that \(\overline{\mathrm{b}} \times \overline{\mathrm{c}}=\overline{\mathrm{b}} \times \overline{\mathrm{a}}\) and \(\overline{\mathrm{c}} \cdot \overline{\mathrm{a}}=0\), then \(\overline{\mathrm{c}} \cdot \overline{\mathrm{b}}\) isMHT CET 2023 Easy
- If \(D, E\) and \(F\) are the mid-points of the sides \(B C\), \(\mathrm{CA}\) and \(\mathrm{AB}\) of triangle \(\mathrm{ABC}\) respectively, then \(\overline{\mathrm{AD}}+\frac{2}{3} \overline{\mathrm{BE}}+\frac{1}{3} \overline{\mathrm{CF}}=\)MHT CET 2023 Medium
- Which from following formulae is used to find the \(\left[\mathrm{OH}^{-}\right]\)ion concentration of a weak monoacidic base?MHT CET 2025 Easy
- Identify the monomer used to obtain a polymer that resembles the wool.MHT CET 2024 Medium
- Find the amount of solute in solution obtained by dissolving it in \(2.5 \mathrm{dm}^3\) water that generates osmotic pressure \(0.245 \mathrm{~atm}\). at \(300 \mathrm{~K}\) ?
(Molar mass of solute \(=58 \mathrm{~g} \mathrm{~mol}^{-1} \mathrm{R}=0.0821 \mathrm{dm}^3 \mathrm{~atm} \mathrm{~K}^{-1} \mathrm{~mol}^{-1}\) )MHT CET 2022 Easy - An a.c. source of frequency ' \(f\) ' is connected to a circuit containing an inductance ' \(L\) ' and resistance ' \(R\) ' in series. The impedance of this circuit isMHT CET 2025 Easy