List of top Physics Questions on Optics asked in AP EAPCET

An object is placed at a distance of \(15\,\text{cm}\) from a convex lens of focal length \(10\,\text{cm}\). On the other side of the lens, at its focus, a convex mirror is placed such that final image formed coincides with the object. The focal length of convex mirror is:

For a prism of angle \(5^\circ\), the angle of minimum deviation \((\delta)\) varies with refractive index \((\mu)\) as shown in the graph. The slope of the graph is: center

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In Young’s double slit experiment, the ratio of intensities of maxima and minima is \(25:9\). The ratio of intensities of two slits is:

Interference fringes produced by a double slit arrangement using a monochromatic light of wave length 5,890Å have an angular fringe width \( 0.28^\circ \). If the entire arrangement is immersed in water, the new angular fringe width will be (\( ^a\mu_w = 4/3 \)):

Convex lens of focal length 20 cm and a concave lens of focal length of 30 cm are separated by a distance of 10 cm. Equivalent power of this arrangement is:

A rectangular glass block of thickness 10 cm and refractive index 1.5 is placed over a small coin. A beaker is filled with water of refractive index 4/3 to a height of 10 cm and placed over the glass block. The apparent depth of coin when viewed at near normal incidence is:

A compound microscope consists of an objective lens of focal length \( f_{o}=1~\text{cm} \) and an eyepiece of focal length \( f_{e}=5~\text{cm} \). An object is placed 1.2 cm in front of the objective. The final image is formed at the least distance of distinct vision. The nature of the intermediate image and the total magnification of the microscope are:

How fast a person should drive his car so that the red signal of light appears green? (wavelengths of red and green colours are 6200 and 5400 respectively)

If a person cannot see objects closer than 100 cm, the power of lens required to read at 25 cm is:

For an astronomical telescope of length 126 cm in normal adjustment, if the focal length of the objective is 850 % more than that of its eyepiece, then the focal length of the eyepiece is:

When a light ray incidents on an equilateral prism of material of refractive index $\sqrt{2}$, the angle of minimum deviation is D. If the light ray incidents on another equilateral prism of material of refractive index $\sqrt{3}$, then the angle of minimum deviation is:

If Young's double slit experiment is done in air first and then if the experiment is conducted by immersing the apparatus in water, the fringe width:

In a Young's double slit experiment, the intensity at a point where the path difference is $\frac{\lambda}{6}$ ($\lambda$ being the wavelength of the light used) is $I$. If $I_{0}$ denotes the maximum intensity, $\frac{I}{I_{0}}$ is

The refractive index of water is $\frac{4}{3}$ and that of glass is $\frac{3}{2}$. The refractive index of glass with respect to water is

For the same angle of incidence, the angles of refraction of light ray in different media A, B, C are $35^{\circ}$, $25^{\circ}$, $15^{\circ}$. If $V_{A}, V_{B}, V_{C}$ are velocities of light in A, B, C media respectively, then

In Young's double-slit experiment, the fringe width is proportional to

A convex lens of focal length $20 \text{ cm}$ is placed in contact with a concave lens of focal length $40 \text{ cm}$. The power of the combination is

An optician prescribes a corrective lens of power \(+2D\). Then the focal length of the required convex lens is

A monochromatic light of wavelength \(6000\ \text{\AA}\) coming from a star is detected in a \(100\)-inch telescope. The limit of resolution of the telescope is approximately

A bulb of power \(660\ \text{W}\) radiates uniformly in all directions. The pressure exerted by the radiation on a surface at a distance of \(5\ \text{m}\) is

A beam of light is incident from air on the surface of a liquid. The angle of incidence is \(\theta\) and the angle of refraction is \(\alpha\). If the critical angle for the liquid when surrounded by air is \(\theta_c\), then \(\sin\theta_c\) is

In Young's double slit experiment, light of wavelength \(480\,\text{nm}\) is incident on two slits separated by a distance of \(4\times 10^{-4}\,\text{m}\). If a thin plate of thickness \(1.4\times 10^{-6}\,\text{m}\) and refractive index \(\dfrac{13}{7}\) is placed between one of the slits and screen, the phase difference introduced at the position of central maxima is:

A concave lens and a convex lens are arranged as shown in the figure. The position of the final image is: