An object of size 4 cm placed perpendicular to the principal of axis of concave mirror. The distance of the object from the mirror equal radius of curvature. The size of the image will be |
|||||||
(a) |
1 m |
(b) |
2 m |
(c) |
3.5 cm |
(d) |
4 cm |
An object of size 4 cm placed perpendicular to the principal of axis of concave mirror. The distance of the object from the mirror equal radius of curvature. The size of the image will be |
|||||||
(a) |
1 m |
(b) |
2 m |
(c) |
3.5 cm |
(d) |
4 cm |
A needle placed 45 cm from lens forms an image on a screen placed 90 cm on the other side of lens, focal length and type of lens is |
|||
(a) |
10 cm, convex lens |
(b) |
30 cm, convert lens |
(c) |
30 cm, concave lens |
(d) |
10 cm, concave lens |
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