Chapter 1: Introduction to Physics
What is the primary goal of physics?
A) To describe natural phenomena
B) To develop mathematical models
C) To invent new technologies
D) To solve complex problems
Answer: A) To describe natural phenomena
Which of the following is a vector quantity?
,A) Mass
B) Speed
C) Displacement
D) Temperature
Answer: C) Displacement
Chapter 2: Motion in One Dimension
An object is thrown upward with an initial velocity. At the highest point, its velocity
is:
A) Maximum
B) Zero
C) Minimum
D) Constant
Answer: B) Zero
The acceleration due to gravity near the Earth's surface is approximately:
A) 9.8 m/s²
B) 10 m/s²
C) 5 m/s²
D) 15 m/s²
Answer: A) 9.8 m/s²
Chapter 3: Motion in Two Dimensions
A projectile is launched at an angle. Which of the following remains constant
throughout its flight?
A) Horizontal velocity
B) Vertical velocity
C) Total velocity
,D) Acceleration
Answer: A) Horizontal velocity
Chapter 4: Forces and Newton's Laws
According to Newton's second law, the acceleration of an object is:
A) Inversely proportional to its mass
B) Directly proportional to the net force acting on it
C) Both A and B
D) Independent of the net force
Answer: C) Both A and B
Chapter 5: Work and Energy
The work done on an object is equal to:
A) The force times the distance moved
B) The change in kinetic energy
C) Both A and B
D) None of the above
Answer: C) Both A and B
Chapter 6: Conservation of Energy
The principle of conservation of energy states that:
A) Energy can be created or destroyed
B) Energy can only change forms
C) The total energy of a closed system remains constant
D) Both B and C
Answer: D) Both B and CChapter 7: Linear Momentum
Which of the following statements about momentum is true?
A) Momentum is a scalar quantity.
, B) The momentum of an object remains constant unless acted upon by an external
force.
C) Momentum can only be transferred in one direction.
D) Momentum is always conserved in inelastic collisions.
Answer: B) The momentum of an object remains constant unless acted upon by an
external force.
In a perfectly elastic collision:
A) Kinetic energy is conserved.
B) Total momentum is not conserved.
C) Some kinetic energy is converted to potential energy.
D) The objects stick together after the collision.
Answer: A) Kinetic energy is conserved.
Chapter 8: Rotational Motion
What is the rotational equivalent of mass in linear motion?
A) Torque
B) Moment of inertia
C) Angular velocity
D) Angular momentum
Answer: B) Moment of inertia
In a rotating system, the angular momentum of an object is given by:
A) L = mvr
B) L = Iω
C) L = Fd
D) Both A and B
Answer: D) Both A and B
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