TS EAMCET · Physics · Ray Optics
Which of the following statement is incorrect?
- A Dispersion is maximum for violet colour.
- B Red light travels faster than violet light in a medium.
- C In vacuum red light travel faster than others.
- D Refractive index of violet light is higher in flint glass as compared to crown glass.
Answer & Solution
Correct Answer
(C) In vacuum red light travel faster than others.
Step-by-step Solution
Detailed explanation
In vacuum all frequencies of electromagnetic waves travels with same speed. Hence, all colours of white light travel at same speed in vacuum.
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 \(\alpha\)-particle of energy ' \(E\) ' is liberated during the decay of a nucleus of mass number 236. The total energy released in this process isTS EAMCET 2024 Easy
- The force of mutual attraction between any two objects by virtue of their masses isTS EAMCET 2025 Easy
- A radioactive element which can decay by two processes, has half-life \(t_1\) for first process and half-life \(t_2\) for second process. Let \(\langle t\rangle\) be the effective average-life of this element. Which of the following is correct?TS EAMCET 2020 Easy
- A light bulb of power is placed at the centre of a hollow sphere of radius If the of the energy is converted into light, then the pressure exerted by the light on the surface of the sphere will be
(Assume the surface of sphere to be perfectly absorbing)TS EAMCET 2021 Easy - A body thrown vertically upwards from the ground reaches a maximum height ' \(h\) '. The ratio of the kinetic and potential energies of the body at a height \(40 \%\) of \(h\) from the ground isTS EAMCET 2024 Medium
- A gas system is taken through the thermodynamic cyclic process 1 → 2 → 3 → 1 as shown below. The amount of heat released by the system is
TS EAMCET 2022 Medium
More PYQs from TS EAMCET
- A copper ball of radius \(3.0 \mathrm{~mm}\) falls in an oil tank of viscosity \(1 \mathrm{~kg} / \mathrm{ms}\). Then, the terminal velocity of the copper ball will be (Density of oil \(=1.5 \times 10^3 \mathrm{~kg} / \mathrm{m}^3\), Density of copper \(=9 \times 10^3 \mathrm{~kg} / \mathrm{m}^3\) and \(g=10 \mathrm{~m} / \mathrm{s}^2\).)TS EAMCET 2019 Easy
- A conducting rod of length \(L\) rotates with angular speed \(\omega\) in a uniform magnetic field of induction \(B\) which is perpendicular to its motion. The induced emf developed between the two ends of the rod isTS EAMCET 2002 Easy
- In a single slit diffraction, the slit is illuminated with light of wavelength \(6000 Å\). If the slit were illuminated by a light of wavelength \(\lambda\) the angular width of the central maximum decreases by \(30 \%\). Then \(\lambda\) isTS EAMCET 2023 Medium
- A ball thrown upwards vertically reaches a height \(25 \mathrm{~m}\) in \(1 \mathrm{~s}\). The ratio of total distance covered by the ball in time \(t=2 \mathrm{~s}\) and \(t=4 \mathrm{~s}\) is (Use, \(g=10 \mathrm{~m} / \mathrm{s}^2\) )TS EAMCET 2021 Medium
- Estimate the approximate volume of aluminium nucleus \((A=27)\) \(\operatorname{Use}\left(\begin{array}{c}\mathrm{R}_0 \simeq 1.0 \times 10^{-15} \mathrm{~m} \ \pi \simeq 3\end{array}\right)\)TS EAMCET 2022 Easy
- The velocity of an object of mass \(2 \mathrm{~kg}\) is given by \(\mathbf{v}=\left(8 t \hat{\mathbf{i}}+3 t^2 \hat{\mathbf{j}}\right) \mathrm{m} / \mathrm{s}\), where \(t\) is time in seconds. What will be the direction of net force on the object relative to the positive direction of \(X\)-axis, at the instant when its magnitude is \(20 \mathrm{~N} ?\)TS EAMCET 2020 Medium