MCQOPTIONS
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MCQOPTIONS
This section includes 3 Mcqs, each offering curated multiple-choice questions to sharpen your Engineering Physics Questions and Answers knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
It takes 2 seconds for a second wave to travel between two fixed points when the day temperature is 10°C. If the temperature rises to 30°C, the sound wave travels between the same fixed parts in __________ |
| A. | 1.9 sec |
| B. | 2 sec |
| C. | 2.1 sec |
| D. | 2.2 sec |
| Answer» B. 2 sec | |
| 2. |
The speed of sound in oxygen (O2) at a certain temperature is 460m/s. The speed of sound in helium (He) at the same temperature will be (assume both gases to be ideal). |
| A. | 460m/s |
| B. | 500m/s |
| C. | 650m/s |
| D. | 1420m/s |
| Answer» E. | |
| 3. |
A wave y=asin(ωt-kx), on a string meets with another wave producing a node at x = 0. Then, the equation of the unknown wave is? |
| A. | y=asin(ωt+kx) |
| B. | y=-asin(ωt+kx) |
| C. | y=asin(ωt-kx) |
| D. | y=-asin(ωt-kx) |
| Answer» C. y=asin(ωt-kx) | |