Question 4116:

• JAMB 2020

In an experiment in which molten naphthalene is allowed to cool, the cooling curve i n the figure was obtained. The temperature 80\(^o\)C is known as the

A. Cooling temperature
B. Boiling point
C. Melting point
D. Vaporization point

Question 4117:

• JAMB 2020

In the figure, the value of R is

A. 3\(\Omega\)
B. 6\(\Omega\)
C. 4\(\Omega\)
D. 5\(\Omega\)

Question 4118:

• JAMB 2020

Which of the following instruments consumes the highest current?

I. Electric iron	250v	1kW
II. Television set	220v	110W
III. Torch light	6v	30W
IV. Immersion heater	110v	500W

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

Question 4119:

• JAMB 2020

In which of the following diagrams is the length of the tube equal to one wavelength?

A. A
B. B
C. C
D. D

Question 4120:

• 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