Q.

By which device can you see the image of the sun ?


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a

Telescope

b

Periscope

c

Pinhole camera

d

Plane mirror 

answer is C.

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Detailed Solution

We can see the image of the sun with a pinhole camera.
Using a pinhole camera, we can observe the sun's image. A pinhole camera can only capture images that are the size of a point. It produces a point-sized or noticeably shrunk image of an infinitely huge object, like the sun. The pinhole camera has an upside-down screen. The pinhole camera is the most basic type of camera. There is no lens on it. It simply uses a tiny (pinhole-sized opening) to focus all light rays within the smallest possible area to obtain the clearest image possible. The image produced by a pinhole camera is always inverted.
 
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By which device can you see the image of the sun ?