The length of line segment PQ = 5 cm. It is reflected in x-axis to get image P’Q’. What is the length of P’Q’?

10.5 cm

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10 cm

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7.5 cm

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5 cm

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Solution

The correct option is D 5 cm
The size of image P’Q’ is the same as the size of the object PQ.
Hence,
PQ = P’Q’ = 5 cm.

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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 ___.

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

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?

α

2 θ

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