POST UTME RSU 2017 Physics | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A capacitor consists of two plates of area 0.01 m^2 and separation 0.001 m. If a potential difference of 10 V is applied across the plates, calculate the energy stored in the capacitor.
A. 0.01 J
B. 0.02 J
C. 0.03 J
D. 0.04 J
Question 2
A particle of mass 3 kg is moving in a circular path of radius 4 m with a cons\tant speed of 5 m/s. If the particle is subject to a centripetal force of 15 N, what is the magnitude of the acceleration of the particle?
A. 20 m/s^2
B. 25 m/s^2
C. 30 m/s^2
D. 35 m/s^2
Question 3
A convex lens of focal length 20 cm is used to form an image of an object placed 30 cm from the lens. If the object is moved to a dis\tance of 40 cm from the lens, what is the new position of the image?
A. 10 cm from the lens
B. 20 cm from the lens
C. 30 cm from the lens
D. 40 cm from the lens
Question 4
A body of mass 5 kg is moving with a velocity of 10 m/s. If the body is subject to a force of 20 N, what is the acceleration of the body?
A. 2 m/s²
B. 4 m/s²
C. 6 m/s²
D. 8 m/s²
Question 5
A solid sphere of radius 0.05 m and mass 0.5 kg is susp\ended from a wire of length 0.5 m in a uniform gravitational field. If the sphere is displaced by 0.01 m from its equilibrium position, calculate the restoring torque acting on the sphere.
A. 0.0015 Nm
B. 0.0020 Nm
C. 0.0025 Nm
D. 0.0030 Nm
Question 6
A block of mass 5 kg is moving with a velocity of 2 m/s on a frictionless surface. A force of 10 N is applied to the block in the direction of motion. What is the acceleration of the block?
A. 0.2 m/s^2
B. 0.5 m/s^2
C. 1 m/s^2
D. 2 m/s^2
Question 7
A particle of mass 1 kg is moving in a circular path of radius 1 m with a cons\tant speed of 2 m/s. If the particle is subjected to a centripetal force of 4 N, what is the angular velocity of the particle?
A. \( 1.0 , \text{rad/s} \)
B. \( 2.0 , \text{rad/s} \)
C. \( 3.0 , \text{rad/s} \)
D. \( 4.0 , \text{rad/s} \)
Question 8
A convex lens of focal length 20 cm is used to form an image of an object placed 30 cm from the lens. Calculate the magnification of the image.
A. 0.5
B. 1
C. 2
D. 3
Question 9
A wave of wavelength 0.5 m and frequency 50 Hz is incident on a screen. If the wave is polarized at an angle of 30° to the screen, calculate the intensity of the wave.
A. 0.5 W/m^2
B. 1.0 W/m^2
C. 1.5 W/m^2
D. 2.0 W/m^2
Question 10
A particle of mass 2 kg is moving in a circular path of radius 3 m with a cons\tant speed of 4 m/s. If the particle is subject to a centripetal force of 12 N, what is the magnitude of the acceleration of the particle?
A. 16 m/s^2
B. 12 m/s^2
C. 8 m/s^2
D. 24 m/s^2
Question 11
A parallel plate capacitor consists of two plates of area 0.01 m^2 and separation 0.001 m. If a potential difference of 10 V is applied across the plates, calculate the capaci\tance of the capacitor.
A. 0.01 F
B. 0.02 F
C. 0.03 F
D. 0.04 F
Question 12
A gas at 300 K and 1 atm is compressed to 2 atm. Assuming ideal gas behavior, what is the new volume of the gas?
A. 0.5 L
B. 1 L
C. 2 L
D. 4 L
Question 13
A 5 kg block is placed on a frictionless surface and attached to a horizontal spring with a spring cons\tant of 50 N/m. If the block is displaced by 0.2 m from its equilibrium position and released from rest, what is the acceleration of the block?
A. 0.1 m/s^2
B. 1 m/s^2
C. 10 m/s^2
D. 100 m/s^2
Question 14
A block of mass 5 kg is attached to a horizontal spring with a force cons\tant of 100 N/m. If the block is displaced by 2 m from its equilibrium position and released from rest, what is the maximum speed of the block?
A. \( 2.0 , \text{m/s} \)
B. \( 4.0 , \text{m/s} \)
C. \( 6.0 , \text{m/s} \)
D. \( 8.0 , \text{m/s} \)
Question 15
A car is traveling at a cons\tant speed of 60 km/h. If the driver applies the brakes and the car comes to a stop in 4 seconds, what is the magnitude of the acceleration of the car?
A. 12 m/s^2
B. 18 m/s^2
C. 24 m/s^2
D. 30 m/s^2

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