MCQOPTIONS
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MCQOPTIONS
This section includes 4 Mcqs, each offering curated multiple-choice questions to sharpen your Physics knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Two longitudinal waves: s1 = 3cos(11t) & s2 = 3cos(10t) interfere. What is the amplitude of the resulting wave? |
| A. | 6cos(0.5t) |
| B. | 6sin(0.5t) |
| C. | 6cos(10.5t) |
| D. | 6sin(10.5t) |
| Answer» B. 6sin(0.5t) | |
| 2. |
Let s say we can hear a beat frequency of 2Hz from two tuning forks. The first tuning fork has a frequency of 100Hz. If wax is applied on the 2nd tuning fork, the beat frequency becomes 4Hz, what is the frequency of the 2nd tuning fork? |
| A. | 100Hz |
| B. | 98Hz |
| C. | 106Hz |
| D. | 104Hz |
| Answer» C. 106Hz | |
| 3. |
Two interfering waves have a frequency of 2Hz & 6Hz. What is the beat frequency? |
| A. | 8Hz |
| B. | 4Hz |
| C. | 2Hz |
| D. | 0 |
| Answer» C. 2Hz | |
| 4. |
Consider the phenomenon of beats & select the correct statement. |
| A. | It occurs when frequencies are close or equal |
| B. | It correspond to the change in intensity we hear due to interference of 2 waves having close frequencies |
| C. | It corresponds to a constant intensity sound heard during wave interference |
| D. | Beat frequency is variable |
| Answer» C. It corresponds to a constant intensity sound heard during wave interference | |