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प्रश्न
Does the flame of a gas stove emit light?
उत्तर
Any burning thing emit light. The intensity of the light may not be the same. A flame of a gas stove emits light.
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संबंधित प्रश्न
Write true or false of the following statement.
We can see an object through an opaque medium.
Differentiate between the luminous and non-luminous bodies. Give two examples of each.
Can a transparent medium form an image? Explain your answer.
Write the names of some cold light-emitting objects.
A ______ is a natural source of light.
________ objects allow all the light to pass through them.
Describe the pictures.
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 |
Velocity of light is greater in denser medium than in rarer medium
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?
