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Mathematics

Statement 1: MM' is a plane mirror and A is an object, then I the image of object A in mirror MM' and so IO = AO.

Statement 1 - MM' is a plane mirror and A is an object, then I is an image of object A. Statement 2 - ΔAOC ≅ ΔIOC by ASA. And, so CI = CA. Triangles, Concise Mathematics Solutions ICSE Class 9.

∴ OA = OI

Statement 2: ΔAOC ≅ ΔIOC by ASA. And, so IO = AO.

  1. Both the statements are true.

  2. Both the statements are false.

  3. Statement 1 is true, and statement 2 is false.

  4. Statement 1 is false, and statement 2 is true.

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Answer

Given, MM' is a plane mirror and A is an object, then I is an image of object A.

The image I of object A is located at the same distance behind the mirror as the object is in front of it, i.e. OA = OI.

So, statement 1 is true.

In △AOC and △IOC,

⇒ ∠AOC = ∠IOC (Both equal to 90°)

⇒ OC = OC (Common)

⇒ ∠ACO = ∠OCI (By law of reflection)

∴ △AOC ≅ △IOC (By ASA congruency criterion)

So, statement 2 is true.

∴ Both the statements are true.

Hence, option 1 is the correct option.

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