A student focussed the image of a distant object using a device X on a white screen S as shown in the figure. if the distancce of the screen from the device 40bcm, select the correct statement about the device.
a) the device X is a cconvex lens of focal length 20 cm.
b) the device X is a concave mirrior of facal length 40 cm.
c) the device X is a concave mirror of radius of carvature 40 cm.
d) the device X is a convex lens of focal length 40 cm.
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Heya buddy !
Here's your answer :-
b) the device X is a concave mirror of focal length 40 cm.
Hope this'll help uh (:
Here's your answer :-
b) the device X is a concave mirror of focal length 40 cm.
Hope this'll help uh (:
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