Jamb Physics 2019 Past Questions and Answers

Question 41:

• JAMB 2019

The earth's gravitational field intensity at its surface is about
(G = 6.7 à— 10\(^{-11}\)Nm\(^2\)/kg\(^2\), mass of the earth is 6 à— 10\(^{24}\)kg, radius of the earth is 6.4 à— 10\(^6\)m, g on the earth = 9.8m/s\(^2\))

A. 6.7N/kg
B. 7.9N/kg
C. 8.0N/kg
D. 9.8N/kg

Question 42:

• JAMB 2019

The following are parts of the eye
I. Retina
II. Pupil
III. Iris
The correct equivalent in the camera in the same order are

A. Diaphragm, Aperture, film
B. Aperture, Diaphragm, Film
C. Film, Diaphragm, Aperture
D. Film, Aperture, Diaphragm

Question 43:

• JAMB 2019

According to kinetic molecular model, in gases

A. The particles are closely packed together, they occupy minimum space & are usually arranged in a regular pattern
B. The particles occur in clusters with molecules slightly farther apart
C. The molecule are very fast apart & occupy all the space made available
D. The particle vibrate about fixed positions and are held together by the strong intermolecular bonds between them

Question 44:

• JAMB 2019

The momentum of a car moving at a constant speed in a circular track

A. Can be both positive and negative
B. Can be zero depending on its position in the track
C. Can be zero depending on its position in the track
D. A centrifugal

Question 45:

• JAMB 2019

The lead-acid accumulator consists of

A. Lead as the positive electrode
B. Lead acid as the negative electrode
C. Hydrochloric acid as the electrolyte
D. Tetraoxosulphate (vi) acid as the electrolyte