- [Medium]An astronomical telescope used to observe distant stars has an objective of focal length 100 cm and an eyepiece of focal length 5 cm. What is its angu...
- [Medium]Two coherent light waves of equal amplitude superpose at a point on a screen where the path difference corresponds to a phase difference of 90 degrees...
- [Medium]A converging lens of power +5 dioptre is placed in close contact with a diverging lens of power -2 dioptre along a common axis. Find the equivalent fo...
- [Medium]Unpolarized light is incident from air onto the flat surface of a transparent glass plate of refractive index 1.5. At what angle of incidence will the...
- [Easy]Monochromatic light of wavelength 600 nm illuminates two narrow slits separated by 0.2 mm, and the interference pattern is observed on a screen 1 m aw...
- [Medium]A jeweller examines a gemstone using a magnifying glass of focal length 5 cm while keeping the final image at the near point of the eye, taken as 25 c...
- [Medium]A single slit of width 0.1 mm is illuminated by parallel light of wavelength 500 nm, and the diffraction pattern is captured on a screen placed 2 m be...
- [Easy]A ray of light travelling through air strikes the smooth surface of a glass block of refractive index 1.5 at an angle of incidence of 60 degrees. Find...
- [Easy]A 2 cm tall arrow is positioned 20 cm in front of a thin convex lens of focal length 15 cm. What is the height of the real image formed on the far sid...
- [Easy]An object is placed 30 cm in front of a concave mirror whose focal length is 20 cm. What is the magnification of the image that the mirror forms in th...
- [Medium]A glass prism with a refracting angle of 60 degrees is made of material whose refractive index is 1.5. Determine the angle of minimum deviation produc...
- [Medium]Light travelling inside a glass block of refractive index 1.5 strikes the boundary with the surrounding air. Beyond what angle of incidence at this gl...
- [Easy]A luminous candle stands 30 cm from a thin converging lens whose focal length is 20 cm. Find the distance from the lens at which a sharp real image of...
- [Medium]An equiconvex lens is ground from glass of refractive index 1.5, and each of its two spherical surfaces has a radius of curvature equal to 20 cm. Dete...
- [Medium]A car rear-view convex mirror of focal length 15 cm forms an image of an approaching vehicle located 30 cm away from the mirror. At what distance from...
- [Easy]A small coin lies at the bottom of a tank filled with water to a real depth of 1.6 m. Taking the refractive index of water as 4/3, what apparent depth...
- [Hard]Angular resolution (Rayleigh) ~ 1.22 λ / D for circular aperture arises from:...
- [Easy]Snell's law at interface n1, n2 is:...
- [Medium]Lens maker formula (thin lens) is:...
- [Easy]Spherical mirror formula is:...
- [Medium]Linear magnification m for lens is:...
- [Easy]Fringe width β in YDSE is:...
- [Medium]First minimum in single slit diffraction at angle θ satisfies:...
- [Easy]Power P of lens in diopters is:...
- [Medium]Critical angle c satisfies sin c =:...
- [Easy]Law of reflection states angle of incidence equals angle of:...
- [Hard]Spherical aberration minimized using:...
- [Hard]Optical fiber guides light mainly by:...
- [Hard]Dispersion in prism occurs because refractive index varies with:...
- [Hard]Equivalent power of thin lenses in contact is:...
- [Hard]Constructive interference path difference condition is:...