Prefix zepto and femto stands for which multiples ?

Answer

To determine the multiples represented by the prefixes "zepto" and "femto," we can follow these steps:

### Step 1: Understand the prefixes
Prefixes in the metric system are used to denote specific powers of ten. Each prefix corresponds to a certain multiple or fraction of the base unit.

### Step 2: Identify the prefix "zepto"
The prefix "zepto" is used to denote a very small quantity. Specifically, it represents \(10^{-21}\).

- **Calculation**:
- 1 zeptometer = \(10^{-21}\) meters

### Step 3: Identify the prefix "femto"
The prefix "femto" also denotes a small quantity, but it is larger than zepto. It represents \(10^{-15}\).

- **Calculation**:
- 1 femtometer = \(10^{-15}\) meters

### Step 4: Summarize the findings
- Zepto corresponds to \(10^{-21}\)
- Femto corresponds to \(10^{-15}\)

### Final Answer:
- **Zepto** stands for \(10^{-21}\) and **Femto** stands for \(10^{-15}\).

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