- The measurement of the following physical quantity is the same:
- A. Pressure and stress
- B. Work and force
- C. Velocity and acceleration
- D. Length and mass
Answer: A
- If a car is traveling at 8 m/s and accelerates uniformly at 2 m/s², its velocity after 5 seconds will be:
- A. 20 m/s
- B. 18 m/s
- C. 25 m/s
- D. 24 m/s
Answer: B
- The maximum velocity acquired by a body falling through a viscous liquid is called:
- A. Viscous velocity
- B. Velocity gradient
- C. Terminal velocity
- D. Instantaneous velocity
Answer: C
- If a spring has a stiffness of 950 N/m, what amount of work will be done in extending the spring by 60 mm?
- A. 1.71 × 10² J
- B. 1.71 × 10⁴ J
- C. 1.71 × 10⁰ J
- D. 17.1 × 10² J
Answer: C
- For simple harmonic motion at the mean position, the angular momentum is:
- A. Zero
- B. Infinite
- C. Maximum
- D. Minimum
Answer: A
- The work-energy equation is given as:
- A. me = ½ mv²
- B. ft = mv – mu
- C. Fs = ½ m(v² – u²)
- D. ½ m(v² + u²)
Answer: C
- A body with a moment of inertia of 3.2 kgm² and an angular velocity of 2.5 rad/s. Find its kinetic energy:
- A. 2 J
- B. 0.5 J
- C. 10.5 J
- D. 10 J
(Please provide the answer for question 7.)
- The SI unit of angular momentum is:
- A. kgm/s
- B. kgm²s⁻²
- C. kgm²s²
- D. kgm²rad/s
Answer: D
- A 2 kg block is dropped from a height of 0.4 m onto a spring whose force constant, k, is 1600 N/m. Find the maximum distance the spring will be compressed:
- A. 2 m
- B. 0.2 m
- C. 0.1 m
- D. 1.0 m
Answer: C
- A metal ball of radius 2.0 mm falls under gravity in oil with a coefficient of viscosity of 2.5 Nsm⁻². If the density of the oil is 950 kg/m³, what is the terminal velocity attained by the metal?
- A. 3.1 × 10² m/s
- B. 2.5 × 10² m/s
- C. 4.3 × 10² m/s
- D. 1.2 × 10² m/s
Answer: B
- The pressure in a column of fluid does not depend on which of the following:
- A. Density of fluid
- B. Shape of the container
- C. Weight of fluid
- D. Gravity
Answer: B
- The work done when a force of (1+2j+k)(1 + 2j + k)(1+2j+k) N displaces a body from r1=(−i−2k)r_1 = (-i – 2k)r1=(−i−2k) m to r2=(j+k)r_2 = (j + k)r2=(j+k) is:
- A. 12 J
- B. 10 J
- C. 2 J
- D. 6 J
Answer: D
- Which of the following physical quantities is a scalar?
- A. Electric field
- B. Electric potential
- C. Force
- D. Velocity
Answer: B
- If force FFF, velocity VVV, and acceleration AAA are taken as fundamental units instead of mass, length, and time, express impulse in terms of FFF, VVV, and AAA:
- A. FV2A2FV^2A^2FV2A2
- B. FVAFVAFVA
- C. FA/VFA/VFA/V
- D. FV/AFV/AFV/A
Answer: D
- The dimension of the coefficient of viscosity is:
- A. MLT−1MLT^{-1}MLT−1
- B. M2L2T−1M^2L^2T^{-1}M2L2T−1
- C. ML−1T−1ML^{-1}T^{-1}ML−1T−1
- D. ML−2T2ML^{-2}T^2ML−2T2
Answer: C
- A 6 kg object is subjected to three forces f1=20i+30jf_1 = 20i + 30jf1=20i+30j N, f2=8i−50jf_2 = 8i – 50jf2=8i−50j N, and f3=2i+2jf_3 = 2i + 2jf3=2i+2j N. What is the acceleration?
- A. 5i+3j m/s25i + 3j \, m/s^25i+3jm/s2
- B. 5i−3j m/s25i – 3j \, m/s^25i−3jm/s2
- C. 3i+5j m/s23i + 5j \, m/s^23i+5jm/s2
- D. 3i−5j m/s23i – 5j \, m/s^23i−5jm/s2
Answer: B
- What is the average power required to lift a mass of 100 kg to a height of 50 m in 50 seconds?
- A. 100 J
- B. 980 Watts
- C. 50 Watts
- D. 5000 Watts
Answer: B
- If the force and the velocity on a system are each reduced simultaneously by half, the power of the system is:
- A. Double
- B. Constant
- C. Reduced to a quarter
- D. Reduced by half
Answer: C
- A body starts from rest and moves with uniform acceleration of 6 m/s². What distance does it cover in the third second?
- A. 18 m
- B. 15 m
- C. 27 m
- D. 30 m
Answer: B
- The density of 400 cm³ of palm oil was 0.9 g/cm³ before frying. If the density of the oil was 0.6 g/cm³ after, assuming no loss of oil due to spilling, its new volume will be:
- A. 360 cm³
- B. 600 cm³
- C. 240 cm³
- D. 450 cm³
Answer: B
- If the moment of inertia of a sphere about its center is I=25mα2I = \frac{2}{5} m\alpha^2I=52mα2, calculate the radius of gyration in terms of α\alphaα:
- A. 2.5α2.5\alpha2.5α
- B. 0.63α0.63\alpha0.63α
- C. 0.5α0.5\alpha0.5α
- D. 3.6α3.6\alpha3.6α
Answer: B
- What happens to the kinetic energy of a moving object if the net work done is positive?
- A. It increases
- B. It decreases
- C. It remains the same
- D. It is zero
Answer: A
- The time taken by a train to slow down from 80 km/hr to 20 km/hr with a uniform deceleration of 2 m/s² is:
- A. 9 s
- B. 10 s
- C. 8.3 s
- D. 8 s
Answer: C
- A container with a mass of 5 kg is lifted to a height of 8 m. How much work is done by the external force?
- A. 400 J
- B. -400 J
- C. 0 J
- D. 50 J
Answer: A
- The physical quantity whose dimensional formula is M1L0T−2M^1L^0T^{-2}M1L0T−2 is:
- A. Bulk modulus
- B. Electric conductance
- C. Surface tension
- D. Force
Answer: C
- The equation of continuity for the streamline flow of fluid can be expressed as:
- A. A1V1=A2V2A_1V_1 = A_2V_2A1V1=A2V2
- B. A12V12=A22V22A_1^2V_1^2 = A_2^2V_2^2A12V12=A22V22
- C. A12V1=A22V2A_1^2V_1 = A_2^2V_2A12V1=A22V2
- D. A2V2=A1V1A^2V^2 = A_1V_1A2V2=A1V1
Answer: A
- The work done by gravitational force when an object of weight 50 kg on a floor moves through a distance of 3 m is:
- A. 500 J
- B. 150 J
- C. 0 J
- D. 1500 J
Answer: C
- The bulk modulus of elasticity is given by k=−VΔpΔvk = -\frac{V\Delta p}{\Delta v}k=−ΔvVΔp; the minus in the expression indicates:
- A. Increase in pressure
- B. Decrease in pressure
- C. Increase in volume
- D. Decrease in volume
Answer: D
- The load that stretches a wire is called:
- A. Tensile load
- B. Tensile force
- C. Tensile stress
- D. Tensile strain
Answer: B
- The moment of force is known as:
- A. Torque
- B. Couple
- C. Inertia
- D. Momentum
Answer: A
- A particle moving in a circular path with a constant speed is said to have:
- A. Zero acceleration
- B. Uniform acceleration
- C. Centripetal acceleration
- D. Angular momentum
Answer: C
- The unit of work done in joules is equivalent to:
- A. kg·m/s
- B. kg·m²/s²
- C. N·m
- D. All of the above
Answer: D
- A projectile is launched at an angle of 30° to the horizontal. What is the shape of its trajectory?
- A. Circle
- B. Parabola
- C. Ellipse
- D. Straight line
Answer: B
- What is the potential energy of a 2 kg mass at a height of 10 m? (Use g = 9.8 m/s²)
- A. 98 J
- B. 196 J
- C. 20 J
- D. 80 J
Answer: B
- In a vacuum, all objects fall with the same acceleration due to:
- A. Gravity
- B. Mass
- C. Air resistance
- D. Weight
Answer: A
- The force that opposes the motion of a body through a fluid is known as:
- A. Friction
- B. Drag
- C. Lift
- D. Thrust
Answer: B
- The Law of Conservation of Energy states that:
- A. Energy can be created or destroyed
- B. Energy cannot be created or destroyed
- C. Energy is always lost as heat
- D. None of the above
Answer: B
- Which of the following quantities is conserved in an elastic collision?
- A. Kinetic energy
- B. Momentum
- C. Both A and B
- D. None of the above
Answer: C
- The phenomenon of light bending when it passes from one medium to another is called:
- A. Reflection
- B. Refraction
- C. Diffraction
- D. Dispersion
Answer: B
- The first law of thermodynamics is a statement of:
- A. Conservation of mass
- B. Conservation of energy
- C. Conservation of momentum
- D. None of the above
Answer: B
- A wave that requires a medium to travel is called a:
- A. Electromagnetic wave
- B. Mechanical wave
- C. Longitudinal wave
- D. Transverse wave
Answer: B
- The speed of sound is highest in:
- A. Solids
- B. Liquids
- C. Gases
- D. Vacuum
Answer: A
- The unit of frequency is:
- A. Hertz (Hz)
- B. Joule (J)
- C. Newton (N)
- D. Watt (W)
Answer: A
- A current-carrying conductor in a magnetic field experiences:
- A. No force
- B. A magnetic force
- C. An electric force
- D. Both A and C
Answer: B
- The energy stored in a stretched or compressed spring is known as:
- A. Kinetic energy
- B. Elastic potential energy
- C. Gravitational potential energy
- D. Thermal energy
Answer: B
- The center of mass of a system of particles is defined as:
- A. The point where all mass is concentrated
- B. The average position of all particles
- C. The point of balance
- D. All of the above
Answer: D
- In a lever, the distance from the fulcrum to the point where the force is applied is called:
- A. Effort arm
- B. Load arm
- C. Moment arm
- D. Distance arm
Answer: A
- The work done by a force is maximum when:
- A. The angle between force and displacement is 0°
- B. The angle between force and displacement is 90°
- C. The angle between force and displacement is 180°
- D. There is no displacement
Answer: A
- The total mechanical energy of a system is the sum of:
- A. Kinetic energy and thermal energy
- B. Potential energy and thermal energy
- C. Kinetic energy and potential energy
- D. Kinetic energy and work done
Answer: C
- The acceleration due to gravity decreases as:
- A. You move away from the Earth’s surface
- B. You move towards the Earth’s surface
- C. You increase your weight
- D. You increase your speed
Answer: A
