LIGHT REFLECTION AND REFRACTION PYQ 1. The laws of reflection hold true for (a) plane mirrors only (b) concave mirrors only (c) convex mirrors only (d) all reflecting surface ( 2020) VSA (1 mark) 2. What is the magnification of the images formed by plane mirrors and why? (Delhi 2015 ) 3. An optical device forms an erect image of an object placed in front of it. If the size of the image is one half that of the object, the optical device is a (a) concave mirror (c) plane mirror (b) convex mirror (d) convex lens. (Term I, 2021-22) 4. The image of an object placed in front of a concave mirror of focal length 15 cm is of the same size as the object. The distance between the object and its image is (a) 15 cm (b) 30 cm (c) 60 cm (d) zero. (Term I, 20...
Top 20 one-word substitution 1. That which is outdated or out of use --- a) Ancient b) Stable c) Obsolete d) None 2. A person who hates women ------ a) Misogynist b) Matricide c) House d) Matriclans 3. One who flirts with ladies ___ a) Philander b) Solemn c) Sinecure d) Posthumous 4. A name assumed by a writer or a false name ____ a) Lie b) Portable c) Eligible d) Anonymous 5. An office for which no salary is paid ___ a) Amateur b) Honorary c) Bigot d) Hospitable 6. A statement that can have a double meaning ___ Verbose Epigraph Ambiguous Ambivalent 7. Th...