Friction [CBSE (Central Board of Secondary Education) Class-8 Science]: Questions 1 - 7 of 17
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Question 1
Question MCQ▾
Force of friction is defined as:
Choices
Choice (4) | Response | |
---|---|---|
a. | Opposing force which comes into play whenever there is relative motion between two bodies. | |
b. | The area of two surfaces in contact | |
c. | Friction which comes into play when a body slides over another body | |
d. | Substances which reduce friction |
Question 2
Question MCQ▾
Friction is a:
Choices
Choice (4) | Response | |
---|---|---|
a. | Conservative force | |
b. | Force | |
c. | Non-conservative force | |
d. | None of the above |
Question 3
Question MCQ▾
Fluid friction is also called as:
Choices
Choice (4) | Response | |
---|---|---|
a. | Viscous drag | |
b. | Drag | |
c. | Both a. and b. are correct | |
d. | None of the above |
Question 4
Question MCQ▾
Force responsible for wear and tear of machine of various parts is:
Choices
Choice (4) | Response | |
---|---|---|
a. | Gravity of earth | |
b. | Friction | |
c. | Relative motion | |
d. | Drag |
Question 5
Question MCQ▾
Spring balance is used to measure the value of:
Choices
Choice (4) | Response | |
---|---|---|
a. | Relative motion | |
b. | Force | |
c. | Weight of object | |
d. | Force of friction between the surface and object |
Question 6
Question MCQ▾
The friction which comes into play when a body slides over another body is:
Choices
Choice (4) | Response | |
---|---|---|
a. | Rolling Friction | |
b. | Sliding friction | |
c. | Treading | |
d. | Drag |
Question 7
Question MCQ▾
Ball bearings are type of:
Choices
Choice (4) | Response | |
---|---|---|
a. | Axle | |
b. | Treading | |
c. | Rollers | |
d. | Wheels |