Elementary Modern Physics - Jamb Physics Past Questions and Answers

Question 176:

• JAMB 2020

Which of the following statements about radioactivity is true?
(i) Alpha particle is positively charged
(ii) Beta particle is negatively charged
(iii) Gamma ray is neutral
(iv) Beta particle has the same mass as helium atom
(v) Gamma ray is charged.

A. I, ii, iii, iv only
B. I, ii, iii only
C. Iv and v only
D. I, ii and v only

Question 177:

• JAMB 2020

Which of the following statements on the use of X-rays is incorrect? X-rays are used

A. In a hospital to obtain photographs of tissues and bones in the body
B. For the treatment of malignant growths like cancer cells
C. In detecting fingerprints
D. To reveal hidden flaws in metal castings and welded joints work of art

Question 178:

• JAMB 2020

Natural radioactivity consists of emission?

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

Question 179:

• JAMB 2020

The mass of a proton is approximately equal to that of

A. An \(\alpha\)-particle
B. A \(\beta\)-Particle
C. A neutron
D. An electron

Question 180:

• JAMB 2020

Which of the following pairs is part of the electromagnetic spectrum?
I. Radio waves
II. sound waves
III. Gamma rays
IV. water waves

A. I and II
B. III and IV
C. I and III
D. II and IV