(4) Concave mirror
59. The for
he focal length of the concave mirror in the
serimental set up, shown alongside, equals :
(1) 10.3 cm
(2) 11.0 cm
(3) 11.7 cm
(4) 12.2 cm
Answers
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0
Answer:
As we know that,
The focal length associated with the mirror as displayed in the mirror would be determined through the difference that lies between the focus(where the image formed) and the
Focal length = concave mirror's distance(P) - position of screen
ff = 15.6 - 4.6=15.6−4.6
∵ f = 11 cmf=11cm
Thus, option B i.e. 11cm being the focal length of the concave mirror is the correct answer.
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