Out of glass (rod) and silk (cloth), work function of glass is

Options

A. smaller
B. larger
C. equal
D. none of the above

Explanation

To determine the work function of glass in comparison to silk cloth, we need to follow these steps:

### Step 1: Understand the Concept of Work Function
The work function is defined as the minimum energy required to remove an electron from the surface of a material. It is a crucial concept in electrostatics and helps in understanding the behavior of materials when they are subjected to external energy.

**Hint:** Recall that the work function is related to the energy required to free electrons from a material.

### Step 2: Compare the Work Functions of Materials
Different materials have different work functions based on their electronic structure. Generally, materials like metals have lower work functions compared to insulators. In this case, we are comparing glass (an insulator) and silk (a fabric made from protein fibers).

**Hint:** Think about the types of materials you are comparing: glass (an insulator) and silk (organic material).

### Step 3: Analyze the Work Function of Glass and Silk
It is known that the work function of glass is lower than that of silk. This means that it requires less energy to remove an electron from the surface of glass compared to silk. Therefore, the work function of glass is smaller than that of silk.

**Hint:** Consider the typical values of work functions for insulators and organic materials.

### Step 4: Conclusion
Based on the analysis, we conclude that the work function of glass is smaller than that of silk cloth.

**Final Answer:** The work function of glass is smaller compared to that of silk cloth.