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Verified answer
Given :
In a concave len,
Object height = 3cm
Object distance = - 10cm
focal length = - 15cm
Remember :- In concave mirror focal length is always negative
To find :
The size of the image
Solution :
Using lens formula that is,
The formula which gives the relationship between image distance, object distance and focal length of a lens is known as the lens formula.
The lens formula can be written as :
where,
by substituting all the given values in the formula,
thus, image distance is -10cm.
Now, using magnification formula i.e.,
here,
by substituting all the given values,
thus, the size of the image is 3 cm.
Answer:
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