Question 146:

• JAMB 1980

Natural radioactivity consists of the emission of

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

Question 147:

• JAMB 1980

What is the total resistance in the above diagram

A. 5 ohms
B. 15 ohms
C. 25 ohms
D. 35 ohms
E. 45 ohms

Question 148:

• JAMB 1980

The total capacitance of the circuit above is

A. 0.25mF
B. 0.50mF
C. 0.75mF
D. 1.25mF
E. 1.50mF

Question 149:

• JAMB 1980

The Diagram above shows the prism arrangement in a

A. Microscope
B. Tereoscope
C. Projector
D. Periscope
E. Gyroscope

Question 150:

• JAMB 1980

What is the acceleration of a particle whose motion is graphically displayed in the diagram above

A. 0.67ms^-2
B. 0.83^-2
C. 0.87^-2
D. 92^-2
E. 2.0^-2