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प्रश्न
Define the terms: a ray of light and a beam of light.
उत्तर
The light traveling in any one direction in a straight line is called a ray of light.
A group of light rays given out from a source is called a beam of light
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संबंधित प्रश्न
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.
Fill in the blank
Pinhole camera is based on the ................... propagation of light.
Write true or false
Image formed in a pinhole camera is erect.
The image obtained in the pinhole camera is ______.
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.
