K.K. GUPTA and STALIN MALHOTRA Solutions for Chapter: Friction, Exercise 3: EXERCISES

Author:K.K. GUPTA & STALIN MALHOTRA

K.K. GUPTA Science Solutions for Exercise - K.K. GUPTA and STALIN MALHOTRA Solutions for Chapter: Friction, Exercise 3: EXERCISES

Attempt the practice questions on Chapter 12: Friction, Exercise 3: EXERCISES with hints and solutions to strengthen your understanding. Frank Experience Science solutions are prepared by Experienced Embibe Experts.

Questions from K.K. GUPTA and STALIN MALHOTRA Solutions for Chapter: Friction, Exercise 3: EXERCISES with Hints & Solutions

MEDIUM
8th CBSE
IMPORTANT
Frank Experience Science>Chapter 12 - Friction>EXERCISES>Q 5

When is there more friction between a car tyre and a road—on a sunny day or on a rainy day? 

HARD
8th CBSE
IMPORTANT
Frank Experience Science>Chapter 12 - Friction>EXERCISES>Q 1

Which type of surface produces (i) least friction? (ii) too much friction? 

MEDIUM
8th CBSE
IMPORTANT
Frank Experience Science>Chapter 12 - Friction>EXERCISES>Q 2

Why it is difficult to walk on a wet marble floor? 

MEDIUM
8th CBSE
IMPORTANT
Frank Experience Science>Chapter 12 - Friction>EXERCISES>Q 3

What is the purpose of using ball bearings in machines? 

MEDIUM
8th CBSE
IMPORTANT
Frank Experience Science>Chapter 12 - Friction>EXERCISES>Q 4

Is the frictional force always undesirable? 

MEDIUM
8th CBSE
IMPORTANT
Frank Experience Science>Chapter 12 - Friction>EXERCISES>Q 5

Why is the surface of a slide polished to make it smooth? 

MEDIUM
8th CBSE
IMPORTANT
Frank Experience Science>Chapter 12 - Friction>EXERCISES>Q 3

State the causes of rolling friction. 

MEDIUM
8th CBSE
IMPORTANT
Frank Experience Science>Chapter 12 - Friction>EXERCISES>Q 4

It takes more force and time to stop the motion of a ship than to stop the motion of a car. Why?