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
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.
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