List of top Physics Questions on Optics asked in VITEEE

The refractive index of a medium is \(\sqrt{3}\). The angle of incidence for which the angle of refraction is \(30^\circ\) is:
In Young's double-slit experiment, the slits are 0.2 mm apart and the screen is 1 m away. The distance between the central bright fringe and the third bright fringe is 1.5 cm. The wavelength of light used is:
A convex lens of focal length 20 cm forms a real image at 30 cm from the lens. The object distance is:
In Young's double-slit experiment, the fringe width is 0.6 mm. If the distance between the slits and screen is doubled, and the separation between slits is halved, the new fringe width will be:
Mass numbers of two nuclei are in the ratio of 4:3. Their nuclear densities will be in the ratio of:
Two parallel, long wires are kept 0.20 m apart in vacuum, each carrying current of \( x \) A in the same direction. If the force of attraction per meter of each wire is \( 2 \times 10^{-6} \, \text{N} \), then the value of \( x \) is approximately:
Two objects A and B are placed at 15 cm and 25 cm from the pole in front of a concave mirror having radius of curvature 40 cm. The distance between images formed by the mirror is:
The following circuit represents
A body executing SHM has displacement \( y = A \cos \omega t \). Identify the graph which represents the variation of potential energy (PE) as a function of time \( t \) and displacement.
A radioactive sample contains 5 × 10\(^7\) kg of each of two isotopes A and B with half-lives of 5 days and 8 days respectively. The fraction of A that decays in 3 days after a period of 3 days is:
A string of length 3 m and mass 0.035 kg is stretched with a tension of 50 N. The speed of the wave on the string is:
In Young’s double slit experiment, the central point on the screen is:
In Young’s double slit experimental setup, if the wavelength alone is doubled, the bandwidth \( \beta \) becomes:
Two thin lenses are in contact and the focal length of the combination is 80 cm. If the focal length of one lens is 20 cm, then the power of the other lens will be:
A ray PQ incident on the refracting face BC is refracted in the prism BA as shown in the figure and emerges from the other refracting face AC as RS such that \( \angle AQ = \angle RS \). If the angle of prism \( A = 60^\circ \) and the refractive index of the material of prism is \( \sqrt{3} \), then the angle of deviation of the ray is:
Which of the following is the correct lens formula?
A prism has a refracting angle of 60°. When placed in the position of minimum deviation, it produces a deviation of 30°. The angle of incidence is
A vessel of depth 2d cm is half-filled with a liquid of refractive index \( \mu_1 \) and the upper half with a liquid of refractive index \( \mu_2 \). The apparent depth of the vessel seen perpendicularly is
A fish looking up through the water sees the outside world contained in a circular horizon. If the refractive index of water is \( 4/3 \) and the fish is 12 cm below the surface, the radius of this circle (in cm) is
Two lenses of focal length \( f_1 = 10 \, \text{cm} \) and \( f_2 = -20 \, \text{cm} \) are kept as shown. The resultant power of combination will be
When a plastic thin film of refractive index 1.45 is placed in the path of one of the interfering waves then the central fringe is displaced through width of five fringes. The thickness of the film, if the wavelength of light is \( 5890 \, \text{Å} \), will be
An unpolarised beam of intensity \( I_0 \) is incident on a pair of nicols making an angle of \( 60^\circ \) with each other. The intensity of light emerging from the pair is
Holography is based on phenomenon of
Two convex lenses of power 2D and 5D are separated by a distance \( \frac{1}{3} \, \text{m} \). The power of optical system formed is
When sunlight is scattered by atmospheric atoms and molecules the amount of scattering of light of wavelength 880 nm is \( A \). Then, the amount of scattering of light of wavelength 330 nm is approximately