In order to obtain a magnification of, –0.75 with a convex lens of focal length 8 cm, the object should be placed:
(a) at less than 8 cm
(b) between 8 cm and 16 cm
(c) beyond 16 cm
(d) at 16 cma

Open in App

Solution

(c) Beyond 16 cm
For an object placed beyond 2f of a convex lens, the image formed is real, inverted and smaller than the object.

Suggest Corrections

Similar questions

Q. To obtain a magnification of, –2 with a convex lens of focal length 10 cm, the object should be placed:
(a) between 5 cm and 10 cm
(b) between 10 cm and 20 cm
(c) at 20 cm
(d) beyond 20 cm

A convex lens of focal length 15 cm produces a magnification of +4. The object is placed:
(a) at a distance of 15 cm
(b) between 15 cm and 30 cm
(c) at less than 15 cm
(d) beyond 30 cm

Q. In order to obtain a magnification of, –3 (minus 3) with a convex lens, the object should be placed:
(a) between optical centre and F
(b) between F and 2F
(c) at 2F
(d) beyond 2F

Q. To obtain a magnification of, –0.5 with a convex lens, the object should be placed:
(a) at F
(b) between optical centre and F
(c) between F and 2F
(d) beyond 2F

Q. A convex lens produces a magnification of + 5. The object is placed:
(a) at focus
(b) between f and 2f
(c) at less than f
(d) beyond 2f

Join BYJU'S Learning Program

In order to obtain a magnification of, –0.75 with a convex lens of focal length 8 cm, the object should be placed: (a) at less than 8 cm (b) between 8 cm and 16 cm (c) beyond 16 cm (d) at 16 cma

(c) Beyond 16 cm ​For an object placed beyond 2f of a convex lens, the image formed is real, inverted and smaller than the object.

In order to obtain a magnification of, –0.75 with a convex lens of focal length 8 cm, the object should be placed:
(a) at less than 8 cm
(b) between 8 cm and 16 cm
(c) beyond 16 cm
(d) at 16 cma

(c) Beyond 16 cm
For an object placed beyond 2f of a convex lens, the image formed is real, inverted and smaller than the object.