HPCET Ray Optics and Optical Instruments — practice questions
26 free MCQs with worked solutions. Tap any question for the answer + explanation, or practice them all in the app.
Practice HPCET Ray Optics and Optical Instruments in the app →The relation between focal length f and radius of curvature R for a spherical mirror is:In the Cartesian sign convention used in ray optics:The mirror equation (relating object distance u, image distance v, focal length f) is:The linear magnification produced by a spherical mirror is given by:
An An object placed at 5 cm in front of a concave mirror (R = 15 cm; f = −7.5 cm) forms an image that is:A real image formed by a mirror is one that:A convex (diverging) mirror always forms an image that is:If n₂₁ is the refractive index of medium 2 w.r.t. medium 1, then n₁₂ equals:When light passes through a rectangular glass slab, the emergent ray is:A coin lies at the bottom of a tank of water (refractive index n_w). To an observer looking from directly abovTotal internal reflection (TIR) occurs when:For light going from a medium of refractive index n to air, the critical angle i_c is given by:The critical angle for diamond (n ≈ 2.42) and water (n ≈ 1.33) is approximately:Optical fibres transmit signals using:For refraction at a single spherical surface from medium 1 (n₁) to medium 2 (n₂), the relation between object The lens-maker's formula for a thin lens (refractive index n) with radii of curvature R₁ and R₂ is:The magnification produced by a thin lens is:The power P of a lens with focal length f (in metres) is:A convex lens of focal length 20 cm forms a real, inverted image of an object placed at 30 cm in front of it. For a prism, the angle of deviation D is related to the angle of prism A and refractive index n by (at minimumDispersion of white light by a prism occurs because:Which colour of light deviates LEAST when white light passes through a glass prism?The speed of light in vacuum is approximately:'Optical density' of a medium is:For a concave lens (diverging lens), the image of a real object is always: