Jamb Physics 2003 Past Questions and Answers

Question 46:

• JAMB 2003

An electron makes a transition from a certain energy level E_k to the ground state E₀. If the frequency of emission is 8.0 x 10¹⁴Hz The energy emitted is

A. 8.25 x 10^-19J
B. 5.28 x 10^-19J
C. 5.28 x 10¹⁹J
D. 8.25 x 10¹⁹J

Question 47:

• JAMB 2003

A force of 100N was used to kick a football of mass 0.8kg. Find the velocity with which the ball moves if it takes 0.8s to be kicked

A. \(32ms^{-1} \)
B. \(50ms^{-1} \)
C. \(64ms^{-1} \)
D. \(100ms^{-1} \)

Question 48:

• JAMB 2003

Given that young's modulus for aluminium is 7.0 x 10¹⁰Nm^-2 and density is 2.7 x 10³kgm^-3 find the speed of the sound produced if a solid bar is struck at one end with a hammer

A. 5.1 x 10³ms^-1
B. 4.2 x 10³ms^-1
C. 3.6 x 10³ms^-1
D. 2.8 x 10³ms^-1

Question 49:

• JAMB 2003

If the uncertainty in the measurement of the position of a particle is 5.0 x 10^-10m, the uncertainty in the momentum of the particle is

A. 1.32 x 10^-44Ns
B. 3.30 x 10^-44Ns
C. 1.32 x 10^-24Ns
D. 3.30 x 10^-24Ns