A 3000 m long line lying at an elevation of 450 m measures 10 cm on a vertical photograph.The focal length of the camera is 21 cm. The scale of the photograph for the area having an elevation of 1000 m will be

A 3000 m long line lying at an elevation of 450 m measures 10 cm on a

1.	A 3000 m long line lying at an elevation of 450 m measures 10 cm on a vertical photograph.The focal length of the camera is 21 cm. The scale of the photograph for the area having an elevation of 1000 m will be
A.	1 : 27381
B.	1 : 25008
C.	1 : 20606
D.	1 : 30421
Answer» B. 1 : 25008

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A 3000 m long line lying at an elevation of 450 m measures 10 cm on a vertical photograph.The focal length of the camera is 21 cm. The scale of the photograph for the area having an elevation of 1000 m will be

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