1) 1.If two plane mirrors are placed at an angle of 60∘ to each other, how many images of an object placed between them will be formed? a) A. 4 b) B. 5 c) C. 7 d) D. 6 2) 2.Two plane mirrors are placed perpendicular to each other (θ=90∘). What is the total number of images formed? a) A. 4 b) B. 3 c) C. 2 d) D. 1 3) 3.If you observe 7 images of an object placed between two plane mirrors, what must be the angle θ between the mirrors? a) A. 600 b) B. 450 c) C. 400   d) D. 420 4) 4.When two plane mirrors are placed parallel to each other, what is the angle θ and the number of images formed? a) A. θ=900, 3 images b) B. θ=00, infinite images c) C.θ=00, 360 images d) D.θ=180 0,1 image 5) 5.The images formed by two plane mirrors are typically virtual and laterally inverted a) A. False b) B. True 6) 6.In the formula n= [( 360 0/ θ) – 1], the subtraction of '1' accounts for which phenomenon in the image formation process? a) A. The final two images formed by multiple reflections overlapping b) B. One image being smaller than the others, c) C. The object itself being mistaken for an image. d) D. The object being placed asymmetrically. 7) 7.If the angle between the two mirrors is 120 0, what is the number of images formed? object lies symmetrically.tri a) A. 2 b) B. 4 c) C. 3 d) D. 1 8) 8.What is the simplest formula used to determine the number of images (n) formed by two plane mirrors inclined at an angle (θ) when (3600/ θ ) is an even integer? a) A.[( 360 0/ θ) – 1], b) B. [( 360 0/ θ) + 1], c) C ( 360 0/ θ) d) D. n=θ 9) 9. If two plane mirrors are inclined at an angle of 750 , the value of 360 0/ θ is 4.8. What is the number of images formed? a) A. 4 b) B. 3 c) C. 4.8 d) D. 5 10) 10. A key characteristic of an image formed by a plane mirror is that the image distance from the mirror is equal to the object distance from the mirror. a) A. False b) B. True

JKC Std IX Number of Images Formed by Two Plane Mirrors

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