Question

The frictional force exerted by liquids is called
A. Lift
B. Viscous friction
C. Rolling friction
D. Dynamic friction

Answer 1

Hint: Before approaching this question, one must have prior knowledge about the properties of liquid and also remember that the function of frictional force is to resist the motion of the body or object, using this information will help you to identify the correct option.

Complete answer:
The force of friction exerted by liquids is named as viscous friction. The occurrence of tension between the fluid and boundaries is the reason which allows the fluid to shave.
The force of friction is the force created by two surfaces that come into contact with each other and move against each other. These forces are mostly impacted by the texture of the surface and the amount of force. The degree of frictional strength is affected by the angle and position of the material.
When an object passes through any medium such as gas or liquid it experiences the force. To go forward through the water, the object needs to flow through the water, resulting in the object being propelled by this slow motion. This frictional force is called drag force which is named as the viscous friction, and this parallels the motion of the body in a fluid medium.

So, the correct answer is “Option B”.

Note:
The trick behind such questions is the knowledge of every term mentioned in the question which can help you to identify the correct option such as in the above solution we have terms like Lift, rolling friction and dynamic friction which can be explained as Lift is the component of a force applied by a fluid flowing over the surface of an object, which is perpendicular to the oncoming flow direction, Often known as rolling resistance, rolling friction is the resistive force that slows down the acceleration of a rolling ball or wheel. When a torque or force is introduced to a stationary wheel, a slight static rotating friction force stops it from turning, the friction between surfaces that move relative to each other is the dynamic friction also named as Kinetic Friction. This friction is due to the motion of a body sliding over another body and knowing the opposing force is understood by dynamic friction.