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NDA General Science Physics Questions Part 3
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© examsnet.com
Question : 13
Total: 91
Which one of the following statements regarding lenses is not correct?
[NDA II 2019]
A convex lens produces both real and virtual images.
A concave lens produces both real and virtual images.
A convex lens can produce images equal, greater and smaller than the size of the object.
A concave lens always produces images smaller than the size of the object
Validate
Solution:
Image Formed by a Lens
Convex lens
Object
Image
Real or Virtual
Magnified or diminished
Erect or inverted
at infinity
at F
real
diminished
inverted
beyond 2F
between F and 2F
real
diminished
inverted
at 2F
at 2F
real
diminished
inverted
between F & 2F
beyond 2F
real
diminished
inverted
at F
at infinity
—
—
—
between F & O
on the same side
virtual
magnified
erect
Concave lens
all positions
within F on the same side
virtual
diminished
erect
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