The time taken to complete ...... Oscillation (s) is called time period

Options

A. One
B. Ten
C. Two
D. Hundred

Explanation

To solve the question, "The time taken to complete ...... Oscillation (s) is called time period," we need to fill in the blank with the correct number of oscillations.

### Step-by-Step Solution:

1. **Understanding the Concept**:
- The time period is defined as the time taken to complete one full cycle of oscillation.

2. **Identifying the Options**:
- The options provided are: 1, 10, 2, 100.

3. **Applying the Definition**:
- According to the definition of time period, it specifically refers to the time required to complete **one** oscillation.

4. **Selecting the Correct Answer**:
- Therefore, the correct answer to fill in the blank is **1**.

5. **Final Answer**:
- The complete statement would read: "The time taken to complete **1** oscillation (s) is called time period."