Advertisements
Advertisements
प्रश्न
Write true or false of the following statement.
A shadow is formed because light travels in a straight-line path.
विकल्प
True
False
उत्तर
True
APPEARS IN
संबंधित प्रश्न
How do we see objects around us ?
Write true or false of the following statement.
Light travels in a straight-line path.
Fill in the blank.
The sun is a ............... source of light.
Fill in the blank.
Light travels in a ................. path.
Match the following columns
| Column A | Column B |
| a. Wooden block | i. new moon's day |
| b. Sun | ii. rectilinear propagation of light |
| c. Umbra | iii. opaque body |
| d. Eclipse | iv. luminous body |
| e. Solar eclipse | v. complete dark park |
Differentiate between the luminous and non-luminous bodies. Give two examples of each.
What is a transparent medium? Give two examples.
A ______ is an artificial source of light.
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 |
A student observes a tree given in Fig. 11.2 through a pin hole camera. Which of the diagrams given in Fig. 11.3 (a) to (d), depicts the image seen by her correctly?
