Q11 of 27 Page 132

Can a virtual image be photographed by a camera? (AS2)

Yes, the virtual image can be photographed by a camera. The camera makes a secondary image of the image that is the virtual image acts as an object for the lens of the camera and it produces another image of the image. This secondary image acts as a real image for the camera.


• When we stand in front of mirror then our virtual image is formed by the mirror. so when we click our image through the mirror’s virtual image then this image acts as a real image which can be projected on the film.


• Our eye acts on the same phenomenon. When we see ourselves on mirror, we get the real image of the virtual image on our retina.


More from this chapter

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9

Assertion (A): A person standing on the land appears taller than his actual height to a fish inside a pond. (AS2)

Reason (R): Light bends away from the normal as it enters air from water.


Which of the following is correct? Explain.


a) Both A and R are true and R is the correct explanation of A.


b) Both A and R are true and R is not the correct explanation of A.


c) A is true but R is false.


d) Both A and R are false.


e) A is false but R is true.

 10

A convex lens is made up of three different materials as shown in the figure Q-10. How many of images does it form? (AS2)

 12

You have a lens suggest an experiment to find out the focal length of the lens. (AS3)

 13

Let us assume a system consist of two lenses with focal length f1 and f2 respectively. How do you find the focal length of the system experimentally? When
 i) two lenses are touching each other
ii) they are separated by a distance 'd' with common principle axis. (AS3)