Physics Optics questions from NEET UG 2016.
Match the corresponding entries of column 1 with column 2. [Where m is the magnification produced by the mirror]<table class="pyq-table"><tbody><tr><td></td><td>Column 1</td><td></td><td>Column 2</td></tr><tr><td>(A)</td><td>$m=-2$</td><td>(a)</td><td>Convex mirror</td></tr><tr><td>(B)</td><td>$m=-\frac{1}{2}$</td><td>(b)</td><td>Concave mirror</td></tr><tr><td>(C)</td><td>$m=+2$</td><td>(c)</td><td>Real image</td></tr><tr><td>(D)</td><td>$m=+\frac{1}{2}$</td><td>(d)</td><td>Virtual image</td></tr></tbody></table>
The interference pattern is obtained with two coherent light sources of intensity ratio, $n$. In the interference pattern, the ratio, $\frac{{I}_{\mathrm{max}}-{I}_{\mathrm{min}}}{{I}_{\mathrm{max}}+{I}_{\mathrm{min}}}$ will be
A person can see clearly object only when they lie between $50\mathrm{cm}$ to $400\mathrm{cm}$ from his eyes. In order to increase the maximum distance of distinct vision to infinity, the type and power of the correcting lens, the person has to use, will be
A astronomical telescope has objective and eyepiece of focal lengths $40 cm$ and $4 cm$ respectively. To view an object $200 cm$ away from the objective, the lenses must be separated by a distance:
A linear aperture whose width is $0.02 cm$ is placed immediately in front of a lens of focal length $60 cm.$ The aperture is illuminated normally by a parallel beam of wavelength $5\times {10}^{-5} cm$. The distance of the first dark band of the diffraction pattern from the centre of the screen is
The intensity at the maximum in a Young's double slit experiment is ${I}_{0}$. Distance between two slits is $d=5\lambda$, where $\lambda$ is the wavelength of light used in the experiment. What will be the intensity in front of one of the slits on the screen placed at a distance $D=10d$?
In a diffraction pattern due to a single slit of width $a$ the first minimum is observed at an angle ${30}^{o}$ when light of wavelength $5000 Å$ is incident on the slit. The first secondary maximum is observed at an angle of:
An air bubble in a glass slab with refractive index $1.5$ (near-normal incidence) is $5\mathrm{cm}$ deep when viewed from one surface and $3\mathrm{cm}$ deep when viewed from the opposite face. The thickness (in $\mathrm{cm}$) of the slab is
The angle of incidence for a ray of light at a refracting surface of a prism is ${45}^{o}$. The angle of prism is ${60}^{o}$. If the ray suffers minimum deviation through the prism, the angle of minimum deviation and refractive index of the material of the prism respectively, are:
Two identical glass $({\mu }_{g}=\frac{3}{2})$ equiconvex lenses of focal length, $f$ are kept in contact. The space between the two lenses is filled with water $({\mu }_{w}=\frac{4}{3})$. The focal length of the combination is