Advertisements
Advertisements
प्रश्न
Distinguish between real and virtual image.
Advertisements
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.
APPEARS IN
संबंधित प्रश्न
A concave mirror converges the light-rays, but a convex mirror diverges them.
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.
A ray of light falls normally on a glass slab. What is the angle of incidence?
The diagram in figure shows a ray of light AO falling on a rectangular glass slab PQRS. Complete the diagram till the ray of light emerges out of the slab. Label on the diagram the incident ray, the refracted ray and the emergent ray.
What is a prism?
The image formed by a pinhole camera is inverted because,
Say TRUE or FALSE
The image formed in a pinhole camera is always the same size as the object
The images that are obtained on a screen are called ______ and that which cannot be obtained on a screen ______.
Assertion (A): Virtual objects can’t be seen by the human eye.
Reason (R): Virtual image is formed by converging rays.
Calculate the number of images formed by plane mirrors kept at an angle of 10° to each other.
