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प्रश्न
Using a pinhole camera a student observes the image of two of his friends, standing in sunlight, wearing yellow and red shirt respectively. What will be the colours of the shirts in the image?
उत्तर
The colours of the image of the shirts 1 will be the same as the colour of the shirt. Image obtained using a pinhole camera is inverted.
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संबंधित प्रश्न
Write true or false of the following statement.
We can see an object through an opaque medium.
Tick the correct answer.
The natural source of light is
Fill in the blank
The Sun and .............. are the natural sources of light.
Answer the following.
Name some sources of light that are not hot.
When light passes through a prism, it gets separated into ______ colours.
_______ is the natural source that stimulates sight and makes things visible.
The angle of deviation of light ray in a prism depends on the angle of ______.
Match the following.
| 1. | Ratio of height of image to height of object. | Concave mirror |
| 2. | Used in hairpin bends in mountains. | Total internal reflection |
| 3. | Coin inside water appearing slightly raised. | Magnification |
| 4. | Mirage | Convex mirror |
| 5. | Used as Dentist’s mirror. | Refraction |
State whether the following statement is True or False
An object can be seen only if it emits light.
Light is a form of energy and it travels in a straight line.
