BITSAT Ray Optics — practice questions
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In the figure above, $AB$ is the incident ra
The figure shows two spherical mirrors. The 
The phenomenon illustrated in the figure oc
A monochromatic light ray passes through a 
The figure shows an eye defect in which par
The figure shows a compound microscope. ForA concave mirror of focal length $20$ cm forms a real image of an object placed $30$ cm from the mirror. Find The speed of light in a transparent medium of refractive index $1.5$ is approximately: (speed of light in vacuA convex lens forms a real image at $60$ cm on one side of an object placed $20$ cm in front of it. Find the fTwo thin lenses of focal lengths $+10$ cm and $+20$ cm are placed in contact. The power of the combination, inA light ray travels from glass ($\mu = 1.5$) to air. The critical angle for total internal reflection at the gAn astronomical telescope in normal adjustment has objective focal length $f_o = 100$ cm and eyepiece focal leSnell's law of refraction states:For a plane mirror, image is:Focal length of a concave mirror with radius of curvature R:Mirror formula relating object distance u, image distance v, focal length f:Magnification by a mirror:Refractive index of water is 1.33. Critical angle for water-air interface:For a thin lens, lens-maker's formula:For a convex lens, an object at 2f forms image at:Power of a lens (P) is defined as:Two thin lenses of powers P₁ and P₂ in contact give combined power:Refraction by a prism: deviation δ depends on:In a compound microscope, magnification by objective is m_o, eyepiece is m_e. Total magnification:Telescope's angular magnification (normal adjustment, image at infinity):Speed of light in a medium of refractive index n:Object at focus of a convex lens. Image is:An object 4 cm tall is placed 30 cm in front of a concave mirror of focal length 20 cm. Image position and sizFor an apparent depth of swimming pool seen from above (real depth d, water n = 4/3):Critical angle for diamond (n = 2.42):Combination of two lenses, f₁ = 20 cm convex and f₂ = -25 cm concave, in contact. Equivalent power:Dispersion of light by prism: angular dispersion (δ_violet - δ_red) for thin prism:A coin at the bottom of a 0.5 m water tank (n = 4/3) appears at depth:In Young's double slit experiment, fringe width:Refractive index of medium 1 w.r.t. medium 2 is n₁₂. Then:Magnifying power of simple magnifier (image at near point):For object at 60 cm from convex lens of f = 20 cm, image is:For total internal reflection at glass-water interface (n_g = 1.5, n_w = 1.33), critical angle:A ray enters a glass slab at 45°. Glass n = 1.5. Angle of refraction inside glass: