When the force applied and the displacement of the body are inclined at `90^(@)` with each other, the work done is

Options

A. infinite
B. maximum
C. zero
D. unity

Explanation

To solve the question regarding the work done when the force applied and the displacement of the body are inclined at 90 degrees, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Concept of Work Done**:
The work done (W) by a force is defined as the dot product of the force (F) and the displacement (S). Mathematically, this is expressed as:
\[ W = F \cdot S = F S \cos \theta \]
where \( \theta \) is the angle between the force and the displacement.

2. **Identify the Given Information**:
In this case, we are given that the angle \( \theta \) between the force and the displacement is \( 90^\circ \).

3. **Substitute the Angle into the Formula**:
Since \( \theta = 90^\circ \), we can substitute this value into the work done formula:
\[ W = F S \cos(90^\circ) \]

4. **Evaluate the Cosine of 90 Degrees**:
We know from trigonometry that:
\[ \cos(90^\circ) = 0 \]

5. **Calculate the Work Done**:
Substituting the value of \( \cos(90^\circ) \) into the equation gives:
\[ W = F S \cdot 0 = 0 \]

6. **Conclusion**:
Therefore, when the force applied and the displacement of the body are inclined at \( 90^\circ \) with each other, the work done is:
\[ W = 0 \]