Question

Useless answers will be reported

Soumen’s teacher asked their class to make a pinhole camera by themselves.
Soumen read the activity 5 given in his textbook on how to make a pinhole
camera. But he was unable to get the image of a well lit object. He was very
upset. His elder brother on observing his pinhole camera found that the hole made
by him was quite large. He rectified Soumen’s mistake and helped him making
another pinhole camera. Now, Soumen can see the image of the object.
(a) On which principle of light does a pinhole camera works?
(b) Why was Soumen unable to get the image of a well lit object?
(c) How does the formation of the image by a pinhole camera is affected by size
of the hole?
(d) What values of Soumen is shown here?

Answer 1

Answer:

Its all the game of intensity, we know intensity= energy/area. when area of whole was large ultimately intensity will be less, as intensity is inversely proportional to area. and when souman reduced the whole size (area) he got more intensity comparatively .

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