Physics
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
Refraction Lens
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Answer
the image is real and diminished formed by a convex lens
Reason — If the magnification produced by a lens is -0.5, it means the image is inverted compared to the object. The negative sign indicates inversion. The magnitude of 0.5 indicates that the image is smaller than the object.
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Related Questions
Identify the wrong statement.
- For a convex lens, u is always negative.
- For a convex lens, f is always positive.
- For a convex lens, v is positive for a virtual image and negative for a real image.
- For a concave lens, u, v and f all are negative.
For a convex lens,the value of magnification m is :
- positive
- negative
- both positive as well as negative
- none
The numerical value of magnification m is always …………… for a concave lens.
- equal to 1
- less than 1
- more than 1
- variable
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