Advertisements
Advertisements
प्रश्न
A coin placed at the bottom of a vessel appears to be raised when water is poured in the vessel.
Advertisements
उत्तर
The coin at a appears to be at B i. e. depth of coin observed is less than the actual depth at A.
The ray of light starting from A (denser) medium bends away from the normal. Due to the Refraction of light, the coin appears at B at a lower depth. Hence, in the same way, the depth of water appears to be less deep.
APPEARS IN
संबंधित प्रश्न
Explain the following term related to spherical lenses:- principal focus
The diverging lens in part (a) is replaced by a converging lens also of focal length 100 mm. The object remains in the same position and an image is formed by the converging lens. Compare two properties of this image with those of the image formed by the diverging lens in part (a).
A ray of light travels from a denser medium to a rarer medium. How will it bend?
How is a spherical mirror used to diverge a beam of light from a point? Name the type of mirror used.
Complete the following diagrams in Figure by drawing the reflected rays for the incident rays 1 and 2.
The diagram below in Figure, shows a convex mirror. C is its centre of curvature and F is its focus. (i) Draw two rays from A and hence locate the position of image of object OA. Label the image IB. (ii) State three characteristics of the image.
A student traces the path of a ray of light passing through a rectangular slab.
 |
 |
 |
 |
For measuring the angle of incidence, he must position the protractor in the manner shown in the figure:
The minimum length of the mirror required to see the full image of the person is half ‘ of his height.
The distance from the center of curvature of the mirror to the pole is called the focal length of the mirror.
