| 1. | Copper | (A) | Light travels in a straight line |
| 2. | Plastic | (B) | Conductor |
| 3. | Rainbow forms | (C) | Insulator |
| 4. | Rectilinear propagation | (D) | Due to dispersion of light |
A) 1 - B, 2 - C, 3 - D, 4 - A
B) 1 - C, 2 - D, 3 - A, 4 - B
C) 1 - C, 2 - D, 3 - B, 4 - A
D) 1 - A, 2 - C, 3 - D, 4 - B
E) None of these
Correct Answer: A
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