NEET UG Wave Optics — practice questions
41 free MCQs with worked solutions. Tap any question for the answer + explanation, or practice them all in the app.
Practice NEET UG Wave Optics in the app →A wavefront in optics is best described as:According to Huygens' principle:Light enters a glass slab (n = 1.5) at angle i = 30°. The angle of refraction r inside glass is approximately:In Young's double-slit experiment, **incoherent** sources (rapidly varying phase difference) give:Two sources are said to be coherent if:For two equal-amplitude coherent sources, the maximum and minimum intensities are:A slit of width 1 × 10⁻⁵ m is illuminated by light of wavelength 500 nm. The angular position of the first minWhich is the KEY physical difference between interference and diffraction?When unpolarised light of intensity I₀ passes through a single polaroid:Malus' law states that when **linearly polarised** light of intensity I₀ passes through a polaroid whose pass-A third polaroid is inserted between two crossed polaroids (90° apart). If the middle polaroid's pass-axis is Two crossed polaroids transmit light of intensity:The refractive index of glass is 1.5. The speed of light in glass is:In Young's double slit, $\lambda = 600$ nm, slit separation $d = 0.5$ mm, screen distance $D = 1$ m. Fringe wiIn single-slit diffraction with $\lambda = 500$ nm and slit width $a = 0.1$ mm, the angular position of the fiPolaroid sunglasses reduce glare from a wet road most effectively because:Light passes from air to glass ($n = 1.5$). Brewster's angle is:HUYGENS' PRINCIPLE states that every point on a wavefront acts as a:For two light sources to produce STABLE INTERFERENCE FRINGES, they must be:In Young's double-slit experiment, the fringe width β is given by:In Young's experiment, a BRIGHT fringe (constructive interference) requires path difference = ?In single-slit diffraction, the central maximum is:Polarisation of light is direct experimental evidence that light is a:BREWSTER'S LAW for the polarising angle θ_B relates to the refractive index n as:By Malus's law, if plane-polarised light of intensity I_0 passes through a polariser oriented at 60° to the poThe resolving power (RP) of a diffraction grating with N slits in the m-th order is:In Young's double-slit experiment, the fringe width β is given byIn a double-slit experiment, if the wavelength is doubled and the slit separation is halved, the fringe width At a point where the path difference between two coherent light waves is 3λ/2, the interference isThe principle of superposition of waves states that at a pointThe Huygens principle states that every point of a wavefront acts asTwo coherent sources produce interference fringes. If the intensities of individual sources are I₁ = 4I₀ and IFor diffraction at a single slit of width a, the angular position of the first minimum is given byThe width of the central maximum in single-slit diffraction on a screen at distance D isThe polarising angle (Brewster angle) for glass of refractive index 1.5 isWhich of the following phenomena is characteristic ONLY of transverse waves and NOT of longitudinal waves?An unpolarised light of intensity I₀ passes through a polariser. The transmitted intensity isIf polarised light of intensity I passes through a polariser whose axis makes angle θ with the polarisation diCoherent sources are those that emit waves ofIn a Young's double-slit experiment, a thin transparent sheet of thickness t and refractive index n is placed Newton originally supported the corpuscular theory of light. The wave theory was strongly established by