in order to determine the focal length of a convex lens by obtaining the image of a distant object on a screen , the position of the screen should be :
a)perpendicular to the plane of convex lens
b)parallel to the plane of convex lens
c)inclined at an angle of 30degree from plane of lens
d)anywhere in any direction

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Solution

b) parallel to the plane of convex lens
In this experiment, screen and lens should be held vertically and wooden bench is placed horizontally.

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b) parallel to the plane of convex lens In this experiment, screen and lens should be held vertically and wooden bench is placed horizontally.

b) parallel to the plane of convex lens
In this experiment, screen and lens should be held vertically and wooden bench is placed horizontally.