TG EAMCET (EAPCET) Physics Multiple Choice Questions (MCQs)

21. The work done by a force acting on an object is zero when:

• A) The force is perpendicular to the displacement
• B) The object moves in the direction of the force
• C) The object moves opposite to the force
• D) The force is parallel to the displacement

Answer: A

22. The work-energy theorem states:

• A) Work done = Kinetic Energy + Potential Energy
• B) Work done = Change in Kinetic Energy
• C) Work done = Force × Time
• D) Work done = Change in Momentum

Answer: B

23. The potential energy stored in a spring is given by:

• A) PE = 1/2 k x²
• B) PE = k x²
• C) PE = 1/2 m v²
• D) PE = m g h

Answer: A

24. Which of the following is a scalar quantity?

• A) Work
• B) Force
• C) Momentum
• D) Displacement

Answer: A

25. The principle of conservation of energy states:

• A) Energy can neither be created nor destroyed
• B) Total energy of an isolated system remains constant
• C) Both A and B
• D) Energy is always lost in a closed system

Answer: C

26. The center of mass of a system of particles lies:

• A) At the geometric center of the system
• B) At the center of gravity
• C) At a point determined by the mass distribution of the system
• D) At the origin of the coordinate system

Answer: C

27. The relation between angular velocity (ω) and linear velocity (v) is:

• A) v = ω × r
• B) v = ω / r
• C) v = r × ω
• D) v = ω² × r

Answer: A

28. The torque (τ) acting on a particle is given by:

• A) τ = r × F
• B) τ = F × d
• C) τ = r · F
• D) τ = m g r

Answer: A

29. The moment of inertia of a solid sphere rotating about its diameter is:

• A) (2/5) m r²
• B) (1/2) m r²
• C) m r²
• D) (3/5) m r²

Answer: A

30. For a rigid body in equilibrium:

• A) The sum of all forces acting on it must be zero
• B) The sum of all torques acting on it must be zero
• C) Both A and B
• D) Only the external forces matter

Answer: C