Subject :NSO Class : Class 8
The picture shows a xylophone. A, B, C and D are the rods in it. Which of the following rods has high pitch of the sound and which has low frequency of vibrations?
| High pitch | Low frequency | |
| A | D | A |
| B | B and C | B and C |
| C | A and D | A and D |
| D | A | D |