a cheetah starting from rest accelerates at a rate of 2.5m/s^2 to reach a speed of 45 m/s.how fare does the cheetah travel
1 answer:
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Answer:
Focal length of the lens is 8.2 cm.
Explanation:
It is given that,
Height of object, h = 4 cm
Object distance, u = -30 cm
Height of the image, h' = -1.5 cm (negative because the image is inverted)
We need to find the focal length of the lens. It can be calculated using lens formula as :
Magnification,
Image distance, v = 11.25 cm
f = 8.18 cm
or f = 8.2 cm
So, the focal length of the lens is 8.2 cm. Hence, this is the required solution.