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प्रश्न
What are the important differences between looking at a photograph of your face and looking at yourself in a plane mirror?
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उत्तर
| Photograph | Image in a Plane Mirror |
| A photograph is made when a real image is projected on a photographic film. | The image formed by a plane mirror is virtual and cannot be taken on a photograph. |
| The image is smaller in size compared to the actual object. | The image is the same size as the object. |
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संबंधित प्रश्न
State whether the following statement is true of false:
A student says that we can see an object because light from our eyes is reflected back by the object.
A ray of light strikes a plane mirror such that its angle of incidence is 30°. What angle does the reflected ray make with the mirror surface?
Show the lateral displacement of the ray on the diagram.
State two factors on which the lateral displacement of the emergent ray depends.
Light travelling from a denser medium to a rarer medium along a normal to the boundary:
(a) is refracted towards the normal
(b) is refracted away from the normal
(c) goes along the boundary
(d) is not refracted
A vertical ray of light strikes the horizontal surface of some water:
- What is the angle of incidence?
- What is the angle of refraction?
A vertical ray of light strikes the horizontal surface of some water:
What is the angle of refraction?
A ray of light when passes from glass to air, bends towards the normal.
Match the Following
| Column A | Column B |
| (a) white Light | (1) Convex mirror |
| (b) Refraction | (2) Concave mirror |
| (c) Virtual images | (3) refraction |
| (d) Real images | (4) spectrum |
| (e) Prism | (5) ray of light from glass to air |
We can see the sun even when it is little below the horizon because of ______.
List in proper sequence the steps of the experiment for determining the approximate focal length of a given concave mirror by obtaining the image of a distant object.
Assertion and reasoning type
- Assertion: If the refractive index of the medium is high (denser medium) the velocity of the light in that medium will be small
- Reason: Refractive index of the medium is inversely proportional to the velocity of the light
Which object use the reflection of light?
How does the light travel?
Light travels fastest in a vacuum. Why?
Light is refracted or bent while going from one medium to another because of its ______ changes.
A water tank appears shallower when it is viewed from the top due to refraction.
When a ray of light is incident along the normal on the surface separating two media:
