JEE Main Physics — Optics previous year questions with solutions.
A plane convex lens of refractive index $1.5$ and radius of curvature $30 \mathrm{~cm}$ is silvered at the curved surface. Now this lens has been used to form the image of an object. At what distance from this lens an object be placed in order to have a real image of the size of the object?
The maximum number of possible interference maxima for slit-separation equal to twice the wavelength in Young's double-slit experiment is
The angle of incidence at which reflected light totally polarized for reflection from air to glass (refractive index $n$ ), is
To get three images of a single object, one should have two plane mirrors at an angle of
The image formed by an objective of a compound microscope is
To demonstrate the phenomenon of interference, we require two sources which emit radiation
Which of the following is used in optical fibres ?
If two mirrors are kept at $60^{\circ}$ to each other, then the number of images formed by them is
Wavelength of light used in an optical instrument are $\lambda_1=4000 Å$ and $\lambda_2=5000 Å$, then ratio of their respective resolving powers (corresponding to $\lambda_1$ and $\lambda_2$ ) is