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1.
Magnification at least distance of distinct vision of a simple microscope having its focal length 5 cm is
2.
If eye is kept at a depth 
inside water of refractive index and viewed outside, then the diameter of the circle through which the outer objects become visible, will be
inside water of refractive index and viewed outside, then the diameter of the circle through which the outer objects become visible, will be
3.
The impact of an image on the retina remains for
4.
An object is placed at a distance of 
from a convex lens of power 
. Find the position of the image
from a convex lens of power . Find the position of the image
5.
A light ray is incident upon a prism in minimum deviation position and suffers a deviation of 
. If the shaded half of the prism is knocked off, the ray will
. If the shaded half of the prism is knocked off, the ray will