Physics
The numerical value of magnification m is always …………… for a concave lens.
- equal to 1
- less than 1
- more than 1
- variable
Refraction Lens
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Answer
less than 1
Reason — As the image formed by a concave lens is always smaller than the object, the magnitude of the magnification is always less than 1, indicating the diminished size of the image compared to the object.
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Related Questions
For a convex lens,the value of magnification m is :
- positive
- negative
- both positive as well as negative
- none
If the magnification produced by a lens is -0.5, the correct statement is:
- the lens is concave
- the image is virtual
- the image is magnified
- the image is real and diminished formed by a convex lens
If a lens deviates a ray towards its centre, its power is …………… and if it deviates the ray away from its centre, its power is ……………
- positive, positive
- negative, negative
- negative, positive
- positive, negative
On reducing the focal length of a lens, its power :
- decreases
- increases
- does not change
- first increases then decreases.