Assertion `:` To hear distinct be beats, difference in frequencies of two sources should be less than 10.
Reason `:` More the number of beats `//` sec., more is the confusion.

Options

A. Both Assertion and Reason are correct, Reason is the coreect expianation of Assertion
B. Bioth Assertion and Reason are Correct but Reason is not the correct expalnation of Assertion
C. Assetion is correct and Reason is incorrect
D. Assertion is incorrect and Reason is correct

Answer

To solve the question, we need to analyze both the assertion and the reason provided.

### Step 1: Understand the Assertion
The assertion states that to hear distinct beats, the difference in frequencies of two sources should be less than 10 Hz.

- **Explanation**: The phenomenon of beats occurs when two sound waves of slightly different frequencies interfere with each other. The beat frequency is given by the absolute difference between the two frequencies (f1 and f2). When this difference is small (less than 10 Hz), the beats are slow enough for the human ear to distinguish them clearly.

### Step 2: Analyze the Reason
The reason given is that more the number of beats per second, more is the confusion.

- **Explanation**: If the frequency difference between the two sources is large (greater than 10 Hz), the beats occur more rapidly. This rapid fluctuation can cause confusion because the listener may not be able to distinguish between the two sources of sound clearly. Instead of hearing distinct beats, the sound may blend into a continuous noise, making it difficult to identify individual frequencies.

### Step 3: Conclusion
Both the assertion and the reason are true. The assertion correctly states the condition for hearing distinct beats, and the reason explains why a larger frequency difference leads to confusion.

### Final Answer
Both the assertion and reason are true, and the reason correctly explains the assertion.