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
explain principle of potentiometer
How many more times louder is 70 decibels than 10 decibels?
Tell me how many neutrons and how many protons are present in a single deuterium nucleus?
One man driving his car over dark night on hard concrete stone road in a forest. His bad faith that his car pings with long ore needles of concrete henceforth his all 4 tyres got punctured. How he might have tackled his problem? please guess answers & post
What is acoustics?
The throbbing caused by sounds of slightly different frequencies that results because of periodic constructive and destructive interference is called:
Why does heated air expand?
Explain virtual image?
Explain what is the proper formula used to calculate acceleration?
According to the standard model of particle physics, what is the name for the three leptons that have no electric charge and little if any mass?
What is time?
Does water drain counterclockwise in the northern hemisphere and clockwise in the southern hemisphere?
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 ?
Give an example of transverse wave?
What is meant by reflection of waves?