Concept explainers
(a)
Distance of the film from the lens.
(a)
Explanation of Solution
Given:
Focal length of the lens,
Distance of the object,
Formula used:
The formula of the focal distance of the lens is given as
Here,
Calculation:
The formula of the focal distance of the lens is given as
Plugging the values in the above equation
Conclusion:
Distance of the film from the lens is
(b)
The magnification and the height of the image.
(b)
Explanation of Solution
Given:
Focal length of the lens,
Distance of the object,
Length of the object,
Formula used:
Magnification of the lens is calculated as
Here,
Calculation:
Magnification of the lens is calculated as
Plugging the values in the above equation
The height of the image is calculated as
Plugging the values in the above equation
Conclusion:
The magnification and the height of the image are
(c)
The lens-to-film distance, magnification and the height of the object.
(c)
Explanation of Solution
Given:
Focal length of the lens,
Distance of the object,
Formula used:
The formula of the focal distance of the lens is given as
Here,
Magnification of the lens is calculated as
Here,
Calculation:
The formula of the focal distance of the lens is given as
Plugging the values in the above equation
Magnification of the lens is calculated as
Plugging the values in the above equation
The height of the image is calculated as
Plugging the values in the above equation
Conclusion:
Distance of the image from the lens is
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