Physics — Test 6
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Question 1
The minimum distance between an object and its real image in a convex lens is_____________?
Question 2
Dioptre power of an concave lens of 10 cm focal length is_______________?
Question 3
A point where the incident parallel rays of light converge or appear to diverge after passing through a lens is called______________?
Question 4
If an object is placed away from 2f of a converging lens then the image will be_______________?
Question 5
Magnifying power of simple microscope______________?
Question 6
The least distance of distinct vision for a normal eye is_______________?
Question 7
If a convex lens of large aperture fails to converge the light rays incident on it to a single point, it is said to suffer from______________?
Question 8
A convex lens of focal length f1 and a concave lens of focal length f2 are placed in contact. The focal length of the combination is_____________?
Question 9
In multimode step index fibre the refractive index of core and cladding is____________?
Question 10
Final image produced by a compound microscope is_____________?