Question:medium
The principle behind the function of Bunsen burner is
The principle behind the function of Bunsen burner is
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Low pressure created by high fluid velocity is the core of the Venturi effect.
Updated On: May 10, 2026
- Pascal's law
- law of flotation
- venturimeter
- Toricelli's law
- Archemedes' principle
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The Correct Option is C
Solution and Explanation
Step 1: Understanding the Concept:
This is a conceptual question asking for the physics principle that explains how a Bunsen burner works. A Bunsen burner mixes gas with air before combustion.
Step 2: Detailed Explanation:
Let's analyze the operation of a Bunsen burner and the principles listed: - Bunsen Burner Operation: Gas flows at high speed out of a small jet at the base. This high-speed jet of gas passes through a wider barrel which has air holes at the bottom. The fast-moving gas creates a region of low pressure inside the barrel near the air holes. The higher atmospheric pressure outside pushes air into the barrel through the holes, where it mixes with the gas. This gas-air mixture then travels up the barrel and is ignited at the top. - Pascal's Law: Deals with pressure transmission in a confined, incompressible fluid at rest. Not relevant to fluid flow. - Law of Flotation / Archimedes' Principle: Deals with the buoyant force on objects submerged in a fluid. Not relevant here. - Torricelli's Law: Deals with the speed of efflux of a fluid from an orifice in a tank. Related to Bernoulli's principle but not the best description. - Venturimeter / Venturi Effect: This is the key principle. The Venturi effect is a specific application of Bernoulli's principle. It states that when a fluid flows through a constricted section (a throat), its speed increases and its pressure decreases. The Bunsen burner operates exactly on this principle: the gas jet acts as the fast-moving fluid, creating a low-pressure zone that draws in air. A venturimeter is a device that measures flow speed using this pressure difference. Therefore, the principle is the same. Step 3: Final Answer:
The principle behind the function of a Bunsen burner is the Venturi effect, which is the working principle of a venturimeter.
This is a conceptual question asking for the physics principle that explains how a Bunsen burner works. A Bunsen burner mixes gas with air before combustion.
Step 2: Detailed Explanation:
Let's analyze the operation of a Bunsen burner and the principles listed: - Bunsen Burner Operation: Gas flows at high speed out of a small jet at the base. This high-speed jet of gas passes through a wider barrel which has air holes at the bottom. The fast-moving gas creates a region of low pressure inside the barrel near the air holes. The higher atmospheric pressure outside pushes air into the barrel through the holes, where it mixes with the gas. This gas-air mixture then travels up the barrel and is ignited at the top. - Pascal's Law: Deals with pressure transmission in a confined, incompressible fluid at rest. Not relevant to fluid flow. - Law of Flotation / Archimedes' Principle: Deals with the buoyant force on objects submerged in a fluid. Not relevant here. - Torricelli's Law: Deals with the speed of efflux of a fluid from an orifice in a tank. Related to Bernoulli's principle but not the best description. - Venturimeter / Venturi Effect: This is the key principle. The Venturi effect is a specific application of Bernoulli's principle. It states that when a fluid flows through a constricted section (a throat), its speed increases and its pressure decreases. The Bunsen burner operates exactly on this principle: the gas jet acts as the fast-moving fluid, creating a low-pressure zone that draws in air. A venturimeter is a device that measures flow speed using this pressure difference. Therefore, the principle is the same. Step 3: Final Answer:
The principle behind the function of a Bunsen burner is the Venturi effect, which is the working principle of a venturimeter.
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