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प्रश्न
Select the correct alternative.
The luminous body is
विकल्प
a lighted bulb
earth
noon
table
उत्तर
a lighted bulb
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संबंधित प्रश्न
Fill in the blank.
The sun is a ............... source of light.
Name any four man made sources of light.
Does the flame of a gas stove emit light?
What do you understand by candle power?
Tick the correct answer.
The natural source of light is
Fill in the blank
The Sun and .............. are the natural sources of light.
Match the following
| Column A | Column B |
| 1. Transparent object | i. Football |
| 2. Eclipses | ii. Glass |
| 3. Translucent object | iii. Fluorescent tube |
| 4. Luminous object | iv. Tracing paper |
| 5. Non - luminous object | v. Shadows |
Match the following.
| Group A | Group B |
| (a) Mirror | (1) Non-luminous |
| (b) Firefly | (2) Inverted image |
| (c) Pinhole camera | (3) Reflection |
| (d) Moon | (4) Luminous |
a) Draw ray diagrams to show how the image is formed using a concave mirror, when the position of object is:
- at C
- between C and F
- between F and P of the mirror.
b) Mention the position and nature of image in each case.
If VB, VG, VR be the velocity of blue, green, and red light respectively in a glass prism, then which of the following statement gives the correct relation?
