1) A smooth shining surface, which rebounds the light back in same or in different direction, is called a) A mirror b) A lens c) reflection of light d) point of incidence 2) Beam of light striking the reflecting surface is called a) Reflecting ray b) Incident ray c) Refracted ray d) Normal 3) Band of seven colour is called a) VIBGYOR b) spectrum c) Dispersion d) Reflection 4) Front balged part of the eyeball is called a) cornea b) choroid c) pupil d) retina 5) Which one of the following statements is correct regarding rods and cones in the human eye? a) Cones are sensitive to dim light b) Cones are sensitive to bright light c) Rods are sensitive to bright light d) Rods can sense colour 6) In case of reflection of light, the angle of incidence (i) and the angle of reflection (r) are related as a) i = r b)  i < r c) i > r d) no definite relation 7) Name the type of mirror used as a backview mirror. a) Plane mirror b) Concave mirror c) Convex mirror d) Any of these 8) Visually impaired people can read and write using a) electronic writer b) digital pens c) braille system d) hearing aids 9) The image formed by a camera and a simple microscope are respectively a) real and real b) real and virtual c) virtual and virtual d) virtual and real 10) What is the angle of incidence of a ray if the reflected ray is at an angle of 90° to the incident ray? a) 60° b) 45° c) 90° d) 180°

Class 8th (light)

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