One of the foci, virtual, double the size of the object
, real and inverted
, virtual and erect
Question:
Two thin convex lenses of focal length are combined to gather, the focal length of the combination is
Question:
The focal length of a convex lens is minimum for
Red
Violet
Blue
Green
Question:
A biconvex lens of focal length is cut out into two Plano-convex lenses. The focal length of each part is
10cm
20cm
30cm
40cm
Question:
The minimum distance between the object and its real image formed by a convex lens of focal length f is
Question:
The refractive index of prism depends on
Angle of the prism
Deviation produced by the prism
Intensity of light
Wave length of light