Jamb Physics 2019 Past Questions and Answers

Question 91:

• JAMB 2019

Which of the following statements are correct of the production and propagation of waves?
I. vibration produces waves
II. waves transmit energy along the medium
III. the medium through which the wave travels does not travel with the wave
IV. waves do not require any medium for transmission

A. I & IV only
B. II & IV only
C. III & IV only
D. I, II and III only

Question 92:

• JAMB 2019

A rectangular solid black has length 10cm, breadth 5cm and height 2cm. If it lies on a horizontal surface, and has density 100kg/m\(^3\), calculate the pressure it exerts on the surface.

A. 200 N/m\(^2\)
B. 300 N/m\(^2\)
C. 100 N/m\(^2\)
D. 400 N/m\(^2\)

Question 93:

• JAMB 2019

The diagram shows four positions of the bob of a simple pendulum. At which of these positions does the bob have maximum kinetic energy and minimum potential energy

A. 1
B. 2
C. 3
D. 4

Question 94:

• JAMB 2019

An object is acted upon by a system of parallel three causing the object to be in state equilibrium. Which of the following statement is not correct

A. The resultant of the parallel forces is zero
B. The algebraic sum of all the moments of the forces is zero
C. All the parallel forces must be equal in magnitude and direction
D. The sum of forces in one direction must be equal to the sum of forces in the opposite direction

Question 95:

• JAMB 2019

Which of the following statements is/are correct for a freely falling body?
I. the total is entirely kinetic
II. the ratio of potential energy to kinetic energy is constant
III. the sum of potential and kinetic energy is constant

A. I only
B. II only
C. III only
D. I & III only