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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
Write true or false of the following statement.
Image formed in a pinhole camera is real.
Write true or false of the following statement.
The image in a pinhole camera gets blurred if the hole is made bigger.
Fill in the blank.
In a pinhole camera, the image formed is ...............
Explain the formation of the image of a luminous object in a pinhole camera with the aid of a neat diagram.
State two factors that affect the size of the image formed in a pinhole camera.
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 length of the pinhole camera is increased (length the screen is moved away from the pinhole).
Fill in the blank
Pinhole camera is based on the ................... propagation of light.
Compare the images formed by plane mirror with that by pinhole camera
______ camera is a simple device that helps us to understand the rectilinear propagation of light.
