Answer Posted / guest
When a pencil of ray, diverging from a point, after
reflection and refraction, actually passes through a second
point that second point is called the real image of the
first point.
When a pencil of rays after reflection; and refraction only
appear to pass through a point, the image is said to be virtual.
The difference between the two is that if a image can be
received upon a screen while a virtual image cannot be
received on a screen but can only be seen by the eye.
| Is This Answer Correct ? | 26 Yes | 11 No |
Post New Answer View All Answers
What is astrophysics?
What secondary color of light is produced by mixing the primary colors of red and blue?
What is the pitch?
What is the term for the speed at which an object will overcome the gravitational attraction of the earth?
What is optical medium?
If blue light is combined with green light, what color of light is produced?
what is the principle used in electromagnetic spectrum?and why there is a necessary of having an electron with unpaired spins?and how the uncertainity principle is used to determine the frequency of an spectral lines ?
I want to prepare a frequency generator. the specifications i.e. output requirements are 12V, 1-10A & frequency upto 1K to 5K. Please, inform me with proper circuit dig. & the component values.
Explain radio telescopes?
What are isotopes?
Is a sewing needle magnetic or non magnetic?
what law yields an equation that is used in determining crystal structure from interference patterns produced by monochromatic x-rays?
How long does the light from sun take to reach us?
What is black body and what are its characteristics? : quantum physics
Explain why are metals able to conduct current so well?
