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?
A-50 cm
B-0.5 cm
C50 cm
D0.5 cm
No.1 PSC Learning App
★
★
★
★
★
Related Questions:
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
object is placed _________to obtain an inverted and enlarged image?
An object placed 30 cm from a concave lens forms a virtual erect image at a distance of 10 cm from the lens. The magnification produced by the lens is?
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?
At which position on principal axis does a concave mirror forms a highly diminished, real and inverted image of an object?