Question 18 Consider a photograph with dimensions 10 cm by 8 em Which of the fol

Question

Question 18 Consider a photograph with dimensions 10 cm by 8 em Which of the following statements is/are true? A. If the photograph is enlarged by a scale factor of 3 it will fit onto a piece of paper that measures 30 em by 20 c If it is enlarged by a scale factor of 2,5 it will fit onto a 30 em by 20 em piece of paper with no B. space left on the sides and 2,5 cm above and below the photograph. C. If it is reduced by a scale factor of 0, 75 then eight such photographs will cover the 30 cm by 20 cm page exactly 1. Only A 2. Only B 3. Only C 4. Only B and C 5. A, B and C

Explanation / Answer

original dimension is 10 cm by 8 cm ...

A - increase by scale factor of 3 .. then its dimension will 30 cm by 24 cm ... so it is not fit in 30 cm by 20 cm ... FALSE

B- increase by scale factor of 2.5 .. so its dimension will 25 cm by 20 cm... so it is fit in 30 cm by 20 cm wiht 2.5 cm space above and 2.5 cm below .. TRUE

C - decrease by scale factor 0.75 .. its dimesion will 7.5 cm by 6 cm.... then 12 photograph arrange easily and also 2 cm space present below .. FALSE

2 is correct - ONLY B

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