Jamb Physics 1993 Past Questions and Answers

Question 36:

• JAMB 1993

Natural radioactivity is the random spontaneous disintegration of the nuclei of heavy isotopes of certain elements with the emission of

A. \(\alpha\), X, and \( \beta\)
B. \(\alpha\), \(\beta\) and \(\gamma\)-rays
C. X, \(\alpha\), \(\gamma\)-ray
D. \(\alpha\), \( \beta\) and X-rays

Question 37:

• JAMB 1993

Which of the following are produced after a nuclear fusion process? i. one heavy nucleus. ii. neutrons^-1. iii. protons. iv. Energy.

A. I and ii
B. I and iv
C. Ii and iii
D. Ii and iv

Question 38:

• JAMB 1993

An element X of an atomic number 88 and mass number 226 decays to form an element Z by emitting two beta particles and an alpha particle. Z is represented by

A. \(^{222}_{82}Z\)
B. \(^{222}_{88}Z\)
C. \(^{226}_{86}Z\)
D. \(^{226}_{80}Z\)

Question 39:

• JAMB 1993

The kinetic theory of photoelectron liberated from a metallic surface depends on the

A. Intensity of the incident radiation
B. Time duration of the incident radiation
C. Temperature of the incident radiation
D. Frequency of the incident radiation

Question 40:

• JAMB 1993

The diagram above shows a velocity time graph representing the motion of a car. Find the total distance covered during the acceleration and retardation of the motion

A. 75m
B. 150m
C. 300m
D. 375m