Question

Numerical Problems. my ..
Determine the magnification of the image also.
(Ans. -120 cm, 3 and real]
Focal length of a concave mirror is 30 cm. If an object is placed at 40 cm. Give the position of image.
The image of an object is at 8 cm from the mirror. If the focal length of the mirror is 16 cm. Then,
determine the object distance.
convex
Ans. -16 cm)
An object is placed at 60 cm from convex lens of focal length 30 cm. If the height of the object is 3
cm, then determine the position and nature of the image.
Ans. 60 cm, cm, Real and inverted].
4. An object is at 10cm from the convex lens. If the focal length of lens is 40 cm, then determine the
position and nature of image.
[Ans. –125. m, 1.25 times, virtual and erect]
5. The focațiength of a concave mirror is 30 cm. If the object is at 20 cm. Determine the position and
nature of object.
Ans. +60 cm, 3 times and virtual
& The image of an object is at 10 cm in a concave lens. If the focal length of concave lens is 15 cm.
Determine the object distance from lens.
Ans. -30 cm]
Calculate the magnification for a convex lens of focal length 10 cm when image formed is erect and
at the least distance of distinct vision.
Ans. 3.5]​

Answer 1

Answer:

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