In which of the following process, convection does not take place primarily

Options

A. Sea and land breeze
B. Trade wind
C. Boiling of water
D. Warming of glass of bulb due to filament

Explanation

To determine in which process convection does not primarily take place, we need to analyze each option provided:

1. **Sea and land breeze**: This phenomenon occurs due to the differential heating of land and water. During the day, the land heats up faster than the sea, causing the air above the land to rise and cooler air from the sea to move in, creating a breeze. This is a classic example of convection.

2. **Fried wind**: This term likely refers to the wind created by the heating of the Earth's surface, which causes air to rise and cooler air to replace it. This process is also a result of convection.

3. **Boiling of water**: In boiling water, the heat from the stove warms the water at the bottom of the pot. The warm water rises, and cooler water descends to take its place, creating a convection current. Thus, convection is a key process here.

4. **Warming of glass or bulb due to filament**: In this case, the glass bulb is heated by the filament through radiation. The filament emits infrared radiation, which warms the glass directly without the need for the movement of air or fluid. This process does not involve convection.

Based on this analysis, the process in which convection does not take place primarily is:

**Answer: Warming of glass or bulb due to filament.**