A toy of height 30 cm is placed 10 cm in front of a plane mirror. What is the distance of image from object andheight of image formed?(1) 10 cm, 30 cm(2) 20 cm, 20 cm(3) 20 cm, 30 cm(4) 30 cm, 10 cm
Question
A toy of height 30 cm is placed 10 cm in front of a plane mirror. What is the distance of image from object andheight of image formed?(1) 10 cm, 30 cm(2) 20 cm, 20 cm(3) 20 cm, 30 cm(4) 30 cm, 10 cm
Solution
The distance of the image from the object in a plane mirror is twice the distance of the object from the mirror. So, if the object is 10 cm from the mirror, the image will be 20 cm from the object.
The height of the image in a plane mirror is the same as the height of the object. So, if the object is 30 cm tall, the image will also be 30 cm tall.
So, the correct answer is (3) 20 cm, 30 cm.
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