Plane Mirror – Basic Diagram (āϏāĻŽāϤāϞ āĻĻāĻžāĻĒā§‹āύ – āĻŽā§ŒāϞāĻŋāĻ• āϚāĻŋāĻ¤ā§ā§°)



  • A plane mirror has a flat reflecting surface. āϏāĻŽāϤāϞ āĻĻāĻžāĻĒā§‹āύ⧰ āĻĒā§ā§°āϤāĻŋāĻĢāϞāĻ• āĻĒ⧃āĻˇā§āĻ  āϏāĻŽāϤāϞ āĻšāϝāĻŧāĨ¤

  • It forms a virtual, erect image of the same size. āχ āĻ…ā§ąāĻžāĻ¸ā§āĻ¤ā§ą, āĻĨāĻŋāϝāĻŧ āφ⧰⧁ āĻŦāĻ¸ā§āϤ⧁⧰ āϏāĻŽāĻžāύ āφāĻ•āĻžā§°ā§° āĻĒā§ā§°āϤāĻŋāĻšā§āĻ›āĻŦāĻŋ āĻ—āĻ āύ āϕ⧰⧇āĨ¤

  • The image is formed at the same distance behind the mirror as the object is in front. āĻŦāĻ¸ā§āϤ⧁ āĻĻāĻžāĻĒā§‹āύ⧰ āφāĻ—āĻĢāĻžāϞ⧇ āϝāĻŋāĻŽāĻžāύ āĻĻā§‚ā§°āϤ āĻĨāĻžāϕ⧇, āĻĒā§ā§°āϤāĻŋāĻšā§āĻ›āĻŦāĻŋ āĻĻāĻžāĻĒā§‹āύ⧰ āĻĒāĻŋāĻ›āĻĢāĻžāϞ⧇ āĻ āĻŋāĻ• āϏāĻŋāĻŽāĻžāύ āĻĻā§‚ā§°āϤ āĻ—āĻ āύ āĻšāϝāĻŧāĨ¤


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MCQs


1. A plane mirror has a:


āϏāĻŽāϤāϞ āĻĻāĻžāĻĒā§‹āύ⧰ āϕ⧇āύ⧇āϧ⧰āĻŖā§° āĻĒā§ā§°āϤāĻŋāĻĢāϞāĻ• āĻĒ⧃āĻˇā§āĻ  āĻĨāĻžāϕ⧇ ?


A) Curved inward | B) Curved outward | C) Flat reflecting surface | D) Wavy surface


Ans: C) Flat reflecting surface


Explanation: A plane mirror has a flat and smooth reflecting surface. āĻŦā§āϝāĻžāĻ–ā§āϝāĻž: āϏāĻŽāϤāϞ āĻĻāĻžāĻĒā§‹āύ⧰ āĻĒā§ā§°āϤāĻŋāĻĢāϞāĻ• āĻĒ⧃āĻˇā§āĻ  āϏāĻŽāϤāϞ āφ⧰⧁ āĻŽāϏ⧃āĻŖ āĻšāϝāĻŧāĨ¤


2. The image formed by a plane mirror is: āϏāĻŽāϤāϞ āĻĻāĻžāĻĒā§‹āύāϤ āĻ—āĻ āĻŋāϤ āĻĒā§ā§°āϤāĻŋāĻšā§āĻ›āĻŦāĻŋ āϕ⧇āύ⧇āϧ⧰āĻŖā§° āĻšāϝāĻŧ ?


A) Real and inverted | B) Virtual, erect and same size | C) Real and enlarged | D) Virtual and diminished


Ans: B) Virtual, erect and same size


Explanation: A plane mirror always forms a virtual, erect image that is equal in size to the object. āĻŦā§āϝāĻžāĻ–ā§āϝāĻž: āϏāĻŽāϤāϞ āĻĻāĻžāĻĒā§‹āύ⧇ āϏāĻĻāĻžāϝāĻŧ āĻ…ā§ąāĻžāĻ¸ā§āĻ¤ā§ą, āĻĨāĻŋāϝāĻŧ āφ⧰⧁ āĻŦāĻ¸ā§āϤ⧁⧰ āϏāĻŽāĻžāύ āφāĻ•āĻžā§°ā§° āĻĒā§ā§°āϤāĻŋāĻšā§āĻ›āĻŦāĻŋ āĻ—āĻ āύ āϕ⧰⧇āĨ¤


3. The image formed by a plane mirror is located: āϏāĻŽāϤāϞ āĻĻāĻžāĻĒā§‹āύāϤ āĻ—āĻ āĻŋāϤ āĻĒā§ā§°āϤāĻŋāĻšā§āĻ›āĻŦāĻŋ āĻ•'āϤ āĻ…ā§ąāĻ¸ā§āĻĨāĻŋāϤ ?


A) In front of the mirror | B) At the pole | C) Behind the mirror at the same distance as the object | D) At infinity


Ans: C) Behind the mirror at the same distance as the object


Explanation: The image is formed behind the mirror at a distance equal to the object's distance in front of the mirror. āĻŦā§āϝāĻžāĻ–ā§āϝāĻž: āĻĒā§ā§°āϤāĻŋāĻšā§āĻ›āĻŦāĻŋāĻ–āύ āĻĻāĻžāĻĒā§‹āύ⧰ āĻĒāĻŋāĻ›āĻĢāĻžāϞ⧇, āĻŦāĻ¸ā§āϤ⧁ āφāĻ—āĻĢāĻžāϞ⧇ āĻĨāĻ•āĻž āĻĻā§‚ā§°āĻ¤ā§āĻŦā§° āϏāĻŽāĻžāύ āĻĻā§‚ā§°āĻ¤ā§āĻŦāϤ āĻ—āĻ āύ āĻšāϝāĻŧāĨ¤


4. Which statement is correct about a plane mirror ? āϏāĻŽāϤāϞ āĻĻāĻžāĻĒā§‹āύ⧰ āĻŦāĻŋāώāϝāĻŧ⧇ āϤāϞ⧰ āϕ⧋āύāĻŸā§‹ āωāĻ•ā§āϤāĻŋ āϏāĻ āĻŋāĻ• ?


A) It has a curved reflecting surface. | B) It forms a real image. | C) It has a flat reflecting surface and forms a virtual image. | D) It always forms a diminished image.


Ans: C) It has a flat reflecting surface and forms a virtual image.


Explanation: A plane mirror has a flat reflecting surface and always forms a virtual, erect image. āĻŦā§āϝāĻžāĻ–ā§āϝāĻž: āϏāĻŽāϤāϞ āĻĻāĻžāĻĒā§‹āύ⧰ āĻĒā§ā§°āϤāĻŋāĻĢāϞāĻ• āĻĒ⧃āĻˇā§āĻ  āϏāĻŽāϤāϞ āĻšāϝāĻŧ āφ⧰⧁ āχ āϏāĻĻāĻžāϝāĻŧ āĻ…ā§ąāĻžāĻ¸ā§āĻ¤ā§ą, āĻĨāĻŋāϝāĻŧ āĻĒā§ā§°āϤāĻŋāĻšā§āĻ›āĻŦāĻŋ āĻ—āĻ āύ āϕ⧰⧇āĨ¤


5. In a plane mirror, the distance of the image from the mirror is: āϏāĻŽāϤāϞ āĻĻāĻžāĻĒā§‹āύāϤ āĻĒā§ā§°āϤāĻŋāĻšā§āĻ›āĻŦāĻŋā§° āĻĻāĻžāĻĒā§‹āύ⧰ āĻĒā§°āĻž āĻĻā§‚ā§°āĻ¤ā§āĻŦ āϕ⧇āύ⧇ āĻšāϝāĻŧ ?


A) Greater than the object's distance | B) Less than the object's distance | C) Equal to the object's distance from the mirror | D) Zero


Ans: C) Equal to the object's distance from the mirror


Explanation: The image forms at the same distance behind the mirror as the object is in front. āĻŦā§āϝāĻžāĻ–ā§āϝāĻž: āĻĒā§ā§°āϤāĻŋāĻšā§āĻ›āĻŦāĻŋāĻ–āύ āĻĻāĻžāĻĒā§‹āύ⧰ āĻĒāĻŋāĻ›āĻĢāĻžāϞ⧇, āĻŦāĻ¸ā§āϤ⧁ āφāĻ—āĻĢāĻžāϞ⧇ āĻĨāĻ•āĻž āĻĻā§‚ā§°āĻ¤ā§āĻŦā§° āϏāĻŽāĻžāύ āĻĻā§‚ā§°āĻ¤ā§āĻŦāϤ āĻ—āĻ āύ āĻšāϝāĻŧāĨ¤


Trick


Plane Mirror = Flat + VESD



  • F = Flat Reflecting Surface (āϏāĻŽāϤāϞ āĻĒā§ā§°āϤāĻŋāĻĢāϞāĻ• āĻĒ⧃āĻˇā§āĻ )

  • V = Virtual (āĻ…ā§ąāĻžāĻ¸ā§āĻ¤ā§ą)

  • E = Erect (āĻĨāĻŋāϝāĻŧ)

  • S = Same Size (āϏāĻŽāĻžāύ āφāĻ•āĻžā§°)

  • D = Same Distance Behind the Mirror (āϏāĻŽāĻžāύ āĻĻā§‚ā§°āĻ¤ā§āĻŦ)


 

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