Neco Physics Past Questions and Answers

Question 11:

• NECO 2000

Which of the following pairs of light rays shows the widest separation in the spectrum of white light?

A. Red and blue
B. Orange and green
C. Red and indigo
D. Violet and green
E. Yellow and red

Question 12:

• NECO 2000

Which of the following is/are TRUE of nuclear fission?

I. A heavy nucleus is split into two nuclei of comparable masses
II. Two light nuclei are joined together to form a heavier nucleus
III. The total mass of the products is less than that of the reactants

A. I only
B. II only
C. III only
D. I and III only
E. II and III only

Question 13:

• NECO 2000

The image obtained on the screen of a pin-hole camera becomes less sharply defined when the ____________

A. Object is moved farther from the pin-hole
B. Screen is moved farther from the pin-hole
C. Object is made smaller
D. Illumination is made more intense
E. Pin-hole is made larger.

Question 14:

• NECO 2000

Which of the following statements about evaporation and boiling is FALSE?

A. Evaporation may take place at any temperature.
B. In evaporation, vapour escapes only from the surface of a liquid
C. The temperature remains constant as long as the liquid is boiling
D. The temperature at which boiling takes place can be altered by changing the external pressure
E. The rate of evaporation does not depend on temperature.

Question 15:

• NECO 2000

Which of the following is/areNOT affected by a magnetic field?

I. Alpha particle
II. Cathode rays
III. Neutrons

A. I only
B. II only
C. III only
D. I and II only
E. I,II & III