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प्रश्न
Distinguish between real and virtual image.
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उत्तर
Real image:
- Can be taken on the screen.
- It is inverted.
- It is formed when light rays after reflection (or refraction) actually meet.
Virtual image:
- Cannot be taken on-screen.
- It is erect.
- It is formed when rays of light after reflection (or refraction) appear to meet.
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संबंधित प्रश्न
A concave mirror converges the light-rays, but a convex mirror diverges them.
A concave mirror forms a virtual image for an object placed ...............................
Draw a ray diagram to show that the depth of a vessel containing water when seen from above, appears to be less than its real depth.
Define the following terms :
Incident ray, Refracted ray, Angle of incidence, Angle of refraction.
Say TRUE or FALSE
The image formed by the plane mirror is laterally inverted, hence the image seen through the periscope is also laterally inverted
Say TRUE or FALSE
The image formed in a pinhole camera is always the same size as the object
Say TRUE or FALSE
A plane mirror is opaque
A person is looking at the image of a tree in a mirror placed 3.5 m in front of him. Given that the tree is at 0.5 m behind his eyes. Find the distance between the image of the tree and his eyes. What are needed to see an object?
Assertion (A): Virtual objects can’t be seen by the human eye.
Reason (R): Virtual image is formed by converging rays.
Magnification for the ______ image is always ______.
