object is placed _________to obtain an inverted and enlarged image?
Abetween C and F of concave mirror
Bbetween C and F of convex mirror
Cat infinity from concave mirror
Dat infinity from convex mirror
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ഫോക്കൽ ദൂരം 5 cm ആയ ഒരു ലഘുസൂക്ഷ്മ ദർശിനി (Simple microscope) യുടെ കോണിയ ആവർധനം (Angular magnification) എത്രയാണ്?
A convex lens having power 5 D is placed in contact with a concave lens having power-3 D. The focal length of the combination will be?
An object is placed at a distance of 10 cm in front of a concave mirror. Its image is formed at a distance at 15 cm on the same side. The focal length of the mirror is?
In which of the following cases does a concave mirror form a real image?
- (i) Object placed between focus and pole
- (ii) Object placed at infinity
- (iii) Object placed at focus