The correct answer is (d) 12 cm.
· The focal length of a convex mirror is half of its radius of curvature.
· A convex mirror is a diverging mirror, meaning it causes light rays to spread out after reflection.
· The focal length is positive for convex mirrors and is measured from the mirror's surface to the focal point, where light rays appear to diverge.
· Given a radius of curvature of 24 cm, the focal length is 12 cm.
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90 Mins English English100 Questions100 Marks90 Mins English English40 Questions30 Marks25 Mins EnglishAn object is placed 15 cm in front of a convex lens of focal length 25 cm. The image distance will be
A short object of length L is placed along the principal axis of a concave mirror slightly away from the focus of the mirror (u ≈ f). What will be the length of the image? (symbols carry their usual meanings)
An object X is placed in air in front of a convex refracting surface. Following four sketches are drawn for depicting the situation (symbols carry their usual meanings).
Which of these could be correct sketches?
a)
b)
c)
d)
When white light passes through the prism, the light colours bend differently. Arrange the following colours from the one that bends the least to the one that bends the most :
I. Blue
II. Green
III. Yellow
IV. Orange
Select the correct answer from the codes given below :
The optical phenomena, twinkling of stars, is due to :
The sky appears blue due to :
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