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4th Chapter

9th class Physics Chapter 4 (English Medium)

Here you can prepare 9th Physics English Medium Chapter 4 (Turning Effect of Forces) Test. Click the button for 100% free full practice test..

Matric Part 1/9th Class Physics Chapter 4 MCQ Test With Answer for Chapter 4 Turning Effect of Forces

9th Class Physics Chapter 4 Online Test

Matric Part 1/9th Class Physics Chapter 4 MCQ Test With Answer for Chapter 4 Turning Effect of Forces

1 The single force that has the same effect as the combined effect of all the force to be added is called a
• A. Opposite force
• B. Single force
• C. Resultant force
• D. Resultant vector
2 The method used for addition of non-parallel forces is.
• A. Algebraic
• B. Head to trail rule
• C. Mathematical
• D. Nil
3 If force is 200 N and length of spanner is 0.15 then torque will be:
• A. 30 Nm
• B. 15Nm
• C. 20 Nm
• D. 10 Nm
4 At what angle sin𝜽 and cos𝜽 has same values:
• A. 30<sup>o</sup>
• B. 45<sup>o</sup>
• C. 60<sup>o</sup>
• D. 90<sup>o</sup>
5 Two equal but unlike parallel forces having different lines of action produce:
• A. a Torque
• B. a couple
• C. Equilibrium
• D. Netural equilibrium
6 Turning effect of a force is called:
• A. Torque
• B. Moment
• C. Couple
• D. Torque and momentum
7 The net torque acting on a rotating body with uniform speed is:
• A. 0
• B. 1
• C. 2
• D. 5
8 If the applied force is 'F' and its moment arm is 'r' then torque is defined as
• A. τ = rF
• B. τ = r2F
• C. τ = r + F
• D. τ = 2rF
9 The vector which has the same effect as the combined effect of vectors:
• A. Negative vector
• B. The vector
• C. Resultant vector
• D. Zero vector
10 The formula of torque is:
• A. L= F x E
• B. E = F x t
• C. t = F x L
• D. E = F x L

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