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प्रश्न
How can you obtain a point source of light?
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उत्तर
A point source of light is obtained either by placing a screen having a fine hole, in front of die luminous body, or by placing the luminous body inside a box having a fine hole on one of its sides.
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संबंधित प्रश्न
Select the correct alternative.
The formation of inverted image in a pinhole camera shows that
What is a pinhole camera? Draw a neat and labelled diagram to show the formation of an image of a lighted candle by it.
Explain the formation of the image of a luminous object in a pinhole camera with the aid of a neat diagram.
How is the image affected in a pinhole camera when another fine hole is made near the first pinhole?
State the effect on the image in a pinhole camera if the hole is made bigger.
State the effect on the image in a pinhole camera if the luminous object is moved towards the pinhole.
Tick the correct answer.
The image formed in a pinhole camera is
Write true or false
Image formed in a pinhole camera is erect.
______ camera is a simple device that helps us to understand the rectilinear propagation of light.
How does light travel?
