Jamb Physics 2015 Past Questions and Answers

Question 16:

• JAMB 2015

Calculate the gravitation force of attraction between two planets of 10²⁴kg and 10²⁷kg separated by a distance of 10²⁰meters.

A. 6.67N
B. 6.56N
C. 7.5N
D. 8.6N

Question 17:

• JAMB 2015

Mr. F. Abioye observed his image though a plane mirror, kept a distance way from him at 4.7m in his room at what distance is the image found from Abioye eye?

A. 9.4m
B. 7.5m
C. 5.7m
D. 6.9m

Question 18:

• JAMB 2015

Primary colours of light are

A. Red, blue and green
B. Cyan, magneta and yellow
C. Black, blue and green
D. None of these colours

Question 19:

• JAMB 2015

Electrons were discovered by

A. James Chadwick B.
B. J.J Thompson
C. Sir Isaac Newton
D. Charles Newton

Question 20:

• JAMB 2015

What is the relationship mechanical advantage (MA) velocity Ratio (V.R) and efficiency with percentage?

A. E = M.A/V.R à— 100 %
B. M.A = E.V.R
C. V.R = 1 ෠sin θ M.A
D. M.A = 1/E à— 100%