Question
What is rectilinear propagation of light? How will you prove it?
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| Column I | Column II |
| A plane mirror | Used as a magnifying glass. |
| A convex mirror | Can form image of objects spread over a large area. |
| A convex lens | Used by dentists to see enlarged image of teeth. |
| A concave mirror | The image is always inverted and magnified. |
| A concave lens | The image is erect and of the same size as the object. |
| The image is erect and smaller in size than the object |
The given data regarding the motion of two different objects Cand Dis in a tabular form. Check them carefully and state whether the motion of the objects is uniform or non-uniform.
| Time | Distance travelled by C (in m) | Distance travelled by D (in m) |
| 9:30 AM | 10 | 12 |
| 9:45 AM | 20 | 19 |
| 10:00 AM | 30 | 23 |
| 10:15 AM | 40 | 35 |
| 10:30 AM | 50 | 37 |
| 10:45 AM | 60 | 41 |
| 11:00 AM | 70 | 44 |