BITSAT Ray and Wave Optics — practice questions
27 free MCQs with worked solutions. Tap any question for the answer + explanation, or practice them all in the app.
Practice BITSAT Ray and Wave Optics in the app →For the prism shown, the deviation δ depends on the angle of incidence i, refractive index n, and prism angle For the lens setup shown, the lensmaker's formula relates 1/f to the radii R₁, R₂ and refractive index n. The For the single-slit diffraction pattern shown, the angular position of the FIRST minimum from central maximum Direct vision prism: two prisms combined so net dispersion is zero but net deviation is not. The condition forSnell's law states:Total internal reflection occurs when light travels from medium of refractive index n₁ to n₂ (n₁ > n₂) at anglApparent depth of object at real depth d in water (n = 4/3) seen from above is:Refractive index of medium where speed of light is v is:For a concave mirror, focal length f relates to radius of curvature R as:Object placed beyond center of curvature C of a concave mirror gives image that is:For a convex lens, object placed at 2f forms image at:Power of a lens of focal length 20 cm (in dioptres):Two thin lenses with powers +5 D and -3 D in contact. Equivalent power:For thin prism of refracting angle A (small), deviation δ is approximately:Critical angle for glass-air interface (n_glass = 1.5):In optical fibers, light travels by:In Young's double slit experiment, fringe width β with screen at distance D and slit separation d:For YDSE with λ = 500 nm, d = 0.2 mm, D = 1 m, fringe width is:Resolving power of telescope with aperture D and wavelength λ (Rayleigh criterion):Brewster's law: at angle of polarization i_B, the relation between i_B and refractive index n is:Resolving power of microscope is proportional to:Two coherent sources of intensities I₁ and I₂ interfere. Maximum intensity in pattern:For thin-film interference (oil on water), constructive interference for reflection condition:Refractive index of medium 1 with respect to medium 2 (denoted ₁n₂ or n₁/n₂). If ₁n₂ = 1.5 and ₂n₃ = 4/3, thenSpeed of light in glass (n = 1.5) is approximately:Diffraction effects are more noticeable when the obstacle/aperture size is:For thin lens, when image distance equals object distance (|v| = |u|), object position is: