Home Physics Experimental Skills The Focal Length of; (I) Convex Mirror (II) Concave Mirror, and (III) Convex Lens, Using the Parallax Method A laboratory attendent by mistake gives only…
Physics Experimental Skills The Focal Length of; (I) Convex Mirror (II) Concave Mirror, and (III) Convex Lens, Using the Parallax Method MCQ (Single Correct)

A laboratory attendent by mistake gives only one needle and a concave mirror to find its focal length :

A
We can find focal length of concave mirror by one needle
B
We can find focal length of concave mirror by two needles only
C
We can not find focal length of concave mirror by one needle
D
None of these

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A
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