SS 2 Physics 3rd Test
 1. 1. Which principle states that for a body to be in equilibrium, the sum of the clockwise moments about any point must be equal to the sum of the anticlockwise moments?A) Principle of MomentB) Principle of EquilibriumC) Newton's First LawD) Newton's Second Law2. 2. Which condition must be satisfied for a rigid body to be in equilibrium under the action of parallel forces?A) The sum of the forces must be zero.B) The sum of the forces and moments must be non-zero.C) The sum of the moments must be zero.D) The sum of the forces and moments must be zero.3. 3. According to Newton's First Law of Motion, an object will remain at rest or continue to move at a constant velocity unless acted upon by a(n):A) Internal forceB) Balanced forceC) External forceD) Unbalanced force4. 4. Which term refers to a pair of forces that have equal magnitudes, opposite directions, and act along different lines of action?A) CoupleB) MomentC) TorqueD) Equilibrium5. 5. Which law states that the rate of change of momentum of an object is directly proportional to the net force applied to it and occurs in the direction of the force?A) Newton's Third LawB) Newton's Law of GravitationC) Newton's Second LawD) Newton's First Law6. 6. What is the term for the repetitive back-and-forth motion of an object about an equilibrium position?A) DampingB) Forced VibrationC) ResonanceD) Simple Harmonic Motion7. 7. What is the term for the phenomenon that occurs when an external force is applied to an object at its natural frequency, causing a large amplitude vibration?A) Simple Harmonic MotionB) ResonanceC) Forced VibrationD) Damping8. 8. __________ is the amount of heat energy required per unit mass to raise the temperature of a substance by 1 degree celsius.A) Thermal ConductivityB) Latent HeatC) Heat CapacityD) Specific Heat Capacity9. 9. Which method is commonly used to determine the specific heat capacity of a substance?A) RadiometryB) ThermodynamicsC) CalorimetryD) Spectroscopy10. 10. __________ is the formula to calculate the heat energy transferred to a substance?A) Q∆T = mcvB) Q = mcΔTC) QT = mcvD) QT = mc∆v11. 11. Which law states that energy cannot be created or destroyed, only transferred or transformed from one form to another?A) Law of Conservation of Angular MomentumB) Law of Conservation of MomentumC) Law of Conservation of EnergyD) Law of Conservation of Mass12. 12.What is the term for the collision between two objects where the total kinetic energy before and after the collision remains constant?A) Inelastic CollisionB) d) Conservation CollisionC) Perfectly Inelastic CollisionD) Elastic Collision13. 13. The force that opposes the motion of an object in simple harmonic motion is called the __________A) Damping forceB) Net forceC) Frequency forceD) Density force14. 14. Which law of motion states that for every action, there is an equal and opposite reaction?A) Law of InertiaB) Newton's Second LawC) Newton's First LawD) Newton's Third Law15. 15. The conservation of linear momentum holds true:A) Only in inelastic collisionsB) Only in elastic collisionsC) Only in explosionsD) In all collisions16. 16. The SI unit of heat energy is:A) WattsB) JoulesC) CaloriesD) Newtons17. 17. Find the quantity of heat required to raise the temperature of 500g of copper from 16⁰C to 116⁰C [ assuming that the specific heat capacity of copper = 400J/kg].A) 24kJB) 20kJC) 400kJD) 2kJ18. 18. The maximum displacement from the equilibrium (central) point is the _____A) PeriodB) VibrationC) FrequencyD) Amplitude19. 19. Which of the following equations is for when two bodies move in the same direction before and after collisionA) m1 u1 - m2 u2 = m1v1 - m2v2B) m1 u1 - m2 u2 = m1v1 + m2v2C) m1 u1 + m2 u2 = m1v1 + m2v2D) m1 u1 + m2 u2 = m1v1 - m2v220. 20. A force acting on a body causes a change in the momentum of the body from 12kgms-1 to 16kgms-1 in 0.2s. Calculate the magnitude of the impulse.A) 4.0NsB) 36NsC) 0.8NsD) 28.0Ns21. 21. The property of a body to remain at rest or to continue in a uniform motion in a straight line is called __________A) InertiaB) MomentumC) EnergyD) Impulse22. 22. __________ is the inward force required to keep an object moving with a constant speed in a circular path.A) Centrifugal forceB) Angular forceC) Centripetal forceD) Oscillation force23. 23. The frequency of a simple harmonic motion refers to the:A) Rate of change of displacementB) Number of cycles per unit timeC) Maximum displacementD) Time taken for one complete cycle24. 24. _______ is the SI unit of forceA) CelsiusB) JouleC) KelvinD) Newton25. 25. The to and fro motion of a ball passed repeatedly between two footballers is _______A) Partially a simple harmonic motionB) A simple harmonic motionC) Not a Simple harmonic motionD) All of the above26. 26. 360⁰ = _____radA) √2πB) 2πC) 2π2D) 1/2π27. 27. The quantity of heat required to raise the temperature of the whole of a substance through 1K is _____A) Heat CapacityB) Thermal energyC) Thermal ConductivityD) Specific Heat Capacity28. 28. _______ is a single force acting alone, which will have the same effect in magnitude and direction as those forces acting together.A) EquilibrantB) Resultant forceC) Restoring forceD) Recurring force29. 29. The turning effect produced by a force is known as the _______A) Principle of forceB) Moment of forceC) Equilibrium of a forceD) Vertical component of a force30. 30. Turning of a tap with our fingers is an application of a _____A) ForceB) CoupleC) VelocityD) Circular Motion
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