Class 9 Physics · Chapter 3 · Test 5

Dynamics Chapter Test

25 MCQs • Review the key concepts from the supplied chapter, including force, Newton’s laws, gravitation, mass and weight, friction, momentum, impulse, and conservation of momentum.

MCQs

25 questions · 20 min · 25 marks

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Sample questions

The first 5 of 25. Try each one, then tap to see the answer.

Question 1
What is a force?
- AA push or a pull
- BThe quantity of matter
- CThe rate of change of distance
- DThe amount of heat
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Answer: A
The chapter describes force as a push or a pull that can change motion.
Question 2
Which of the following is a contact force?
- AGravitational force
- BFriction
- CElectrostatic force
- DMagnetic force
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Answer: B
Friction acts between surfaces in contact.
Question 3
Which of the following is a non-contact force?
- ATension
- BFriction
- CElectrostatic force
- DNormal force
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Answer: C
Electrostatic force can act between charged objects without physical contact.
Question 4
Which equation represents Newton's law of gravitation?
- AF = Gm1m2/r^2
- BF = ma
- Cp = mv
- DW = mg
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Answer: A
The gravitational force depends on the product of the masses and the inverse square of their separation.
Question 5
Which of the four fundamental forces is weakest according to the chapter?
- AStrong nuclear
- BElectromagnetic
- CWeak nuclear
- DGravitational
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Answer: D
The supplied text identifies gravity as the weakest fundamental force.

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