Question

Match the type of Friction listed in List-I with their suitable Example listed in List-II:

List-I (Friction)	List-II (Example)
(A) Fluid Friction	(I) Skating on Ice
(B) Rolling Friction	(II) When an athlete glides in air
(C) Static Friction	(III) When force applied to an object does not cause it to move
(D) Sliding Friction	(IV) Roller Skating

Choose the correct answer from the options given below :

• A. (A)-(I), (B)-(III), (C)-(IV), (D)-(II)
• B. (A)-(III), (B)-(II), (C)-(I), (D)-(IV)
• C. (A)-(II), (B)-(IV), (C)-(III), (D)-(I)
• D. (A)-(IV), (B)-(I), (C)-(II), (D)-(III)

Answer 1

The Correct Option is C

To match the types of friction in List-I with the examples in List-II, let's consider the characteristics of each type of friction: 

• Fluid Friction: This occurs when an object moves through a fluid (liquid or gas). It is exemplified by "When an athlete glides in air" because the motion involves air resistance.
• Rolling Friction: This type of friction is experienced when an object rolls over a surface. "Roller Skating" is a suitable example because it involves wheels rolling over a surface.
• Static Friction: This is the force preventing an object from moving when a force is applied. It is illustrated by "When force applied to an object does not cause it to move" because the object remains static.
• Sliding Friction: Occurs when two surfaces slide against each other. "Skating on Ice" is an example due to the skates sliding over the ice.

Therefore, the correct match is:

• (A)-(II): Fluid Friction - When an athlete glides in air
• (B)-(IV): Rolling Friction - Roller Skating
• (C)-(III): Static Friction - When force applied to an object does not cause it to move
• (D)-(I): Sliding Friction - Skating on Ice

This aligns with the provided correct answer: (A)-(II), (B)-(IV), (C)-(III), (D)-(I).

Answer 2

The correct matches for different types of friction and their corresponding examples are as follows:

• Fluid Friction – When an athlete glides in air: This type of friction occurs when an object moves through a fluid, such as air or water. In this case, the friction between the athlete and the air slows down their motion, like when a skydiver glides through the air.
• Rolling Friction – Roller Skating: Rolling friction occurs when an object rolls over a surface. In the case of roller skating, the friction between the wheels and the surface allows the skater to move, but it is generally less than sliding friction, making it easier to roll.
• Static Friction – When force applied to an object does not cause it to move: Static friction is the frictional force that resists the initiation of motion. It prevents an object from moving when a force is applied, such as when trying to push a heavy box that doesn't budge.
• Sliding Friction – Skating on Ice: Sliding friction occurs when two surfaces slide over each other. Ice skating involves sliding friction, where the skate blades slide over the ice surface, and the friction between the two surfaces helps control the skater’s movement.

In conclusion, each type of friction plays a distinct role in everyday activities and sports, influencing how objects move and interact with surfaces.