/10 Report a question What's wrong with this question? You cannot submit an empty report. Please add some details. 12345678910 Chapter 9 : Ray Optics and Optical Instruments This Quiz Contains a set of 10 Questions. The Passing Cut-off is 60%. To start the Quiz, click on the Start Button. All the Best! 1 / 10 Power (P) of a lens is given by P = 1/f (m) P = f P = −1/f P = n/f 2 / 10 Angle between incident and emergent ray through prism is refracting angle deviation angle dispersion angle none 3 / 10 A convex lens with f = 25 cm is cut into two halves along its optical axis and the halves are separated slightly. The focal length of each half is 12.5 cm 25 cm 50 cm unchanged at system level 4 / 10 Condition for total internal reflection: light travels from optically rarer to denser denser to rarer vacuum to glass air to air 5 / 10 Myopia is corrected by using convex lens concave lens cylindrical lens none 6 / 10 An astronomical telescope has fo = 100 cm, fe = 5 cm (normal adjustment). Magnitude of angular magnification (M=) 10 15 5 20 7 / 10 Two thin lenses in contact: f₁ = +10 cm, f₂ = −20 cm. Equivalent focal length F = 10 cm −10 cm −20 cm 20 cm 8 / 10 In a spectrometer, at minimum deviation for a prism, the refracted path inside is grazing critical asymmetric symmetric 9 / 10 Power of lens used for myopia correction is positive negative zero infinite 10 / 10 In a camera, to focus a far object at the sensor, the lens–sensor gap is approx. f 2f f/2 independent of f Your score is 0% Restart quiz
