If a line segment of length 10 cm is reflected in a line of symmetry (mirror), then what is the length of line of reflection?

5 cm

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10 cm

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15 cm

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20 cm

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Solution

The correct option is B
10 cm

The image formed in a plane mirror is of the same length of the object. So, the image of the line would remain a line and there would be no change in its length. So, the length of the reflection is 10 cm itself.

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If a line segment of length 10 cm is reflected in a mirror then reflection obtained is a line segment of length ___.

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Question 22

Fill in the blanks to make the statements true.

If a line segment of length 5 cm is reflected in a line of symmetry (mirror), then its reflection (image) is a ___ of length ___.

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