Class 8 Exam > Class 8 Questions > Why are the head of a match stick and the sid...
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Why are the head of a match stick and the sides of a match box deliberately made rough?
- a)To increase friction
- b)To decrease friction
- c)To increase the amount of heat
- d)To decrease the amount of heat
Correct answer is option 'A'. Can you explain this answer?
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Why are the head of a match stick and the sides of a match box deliber...
Due to increased friction, greater frictional heat is produced in the match stick which thus lights up easily.
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Why are the head of a match stick and the sides of a match box deliber...
Frictional force:
Friction is the force that resists the relative motion or tendency of such motion of two surfaces in contact. When a matchstick is struck against the rough surface of a matchbox, the frictional force between the head of the matchstick and the sides of the matchbox is increased due to the roughness of the surfaces.
Increased friction:
The roughness of the head of the matchstick and the sides of the matchbox increases the contact area between the two surfaces. This increased contact area leads to a greater amount of frictional force being generated when the matchstick is struck. The increased frictional force helps in igniting the matchstick more effectively.
Ignition process:
When the matchstick is struck against the rough surface of the matchbox, the frictional force generates heat, causing the matchstick to ignite. The rough surfaces of the matchstick and matchbox provide the necessary friction for the ignition process to occur efficiently.
In conclusion, the deliberate roughness of the head of a matchstick and the sides of a matchbox is designed to increase the friction between the two surfaces. This increased friction helps in igniting the matchstick by generating heat through the frictional force.
Friction is the force that resists the relative motion or tendency of such motion of two surfaces in contact. When a matchstick is struck against the rough surface of a matchbox, the frictional force between the head of the matchstick and the sides of the matchbox is increased due to the roughness of the surfaces.
Increased friction:
The roughness of the head of the matchstick and the sides of the matchbox increases the contact area between the two surfaces. This increased contact area leads to a greater amount of frictional force being generated when the matchstick is struck. The increased frictional force helps in igniting the matchstick more effectively.
Ignition process:
When the matchstick is struck against the rough surface of the matchbox, the frictional force generates heat, causing the matchstick to ignite. The rough surfaces of the matchstick and matchbox provide the necessary friction for the ignition process to occur efficiently.
In conclusion, the deliberate roughness of the head of a matchstick and the sides of a matchbox is designed to increase the friction between the two surfaces. This increased friction helps in igniting the matchstick by generating heat through the frictional force.
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Why are the head of a match stick and the sides of a match box deliberately made rough?a)To increase frictionb)To decrease frictionc)To increase the amount of heatd)To decrease the amount of heatCorrect answer is option 'A'. Can you explain this answer?
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