Advertisements
Advertisements
प्रश्न
How can you obtain a point source of light?
Advertisements
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.
APPEARS IN
संबंधित प्रश्न
Define the terms: a ray of light and a beam of light.
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.
State the effect on the image in a pinhole camera if the luminous object is moved towards the 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.
Write true or false
Image formed in a pinhole camera is erect.
The image obtained in the pinhole camera is ______.
______ camera is a simple device that helps us to understand the rectilinear propagation of light.
How does light travel?
