Neco Physics 2002 Past Questions and Answers

Question 1:

• NECO 2002

A negatively charged rod is brought near the cap of an electroscope. The cap is earthed momentarily while the charge is near to it. The rod is then removed. Which statement is correct?

A. The cap will be positively charged and the will be negatively charged
B. The cap will be negatively charged and the leaf will be positively changed
C. The cap and the leaf will be positively charged
D. The cap and the leaf will be negatively charged
E. None

Question 2:

• NECO 2002

If the refractive index of water is 1.33, what is the critical angle for a water-air boundary?

A. 36.0 °
B. 40.2 °
C. 41.8 °
D. 48.8 °
E. 62.7 °

Question 3:

• NECO 2002

What does NOT affect the rate of evaporation of a liquid ____________

A. Exposed surface area of the liquid
B. Humidity of the surroundings
C. Nature of the liquid
D. Temperature the liquid
E. Volume of the liquid.

Question 4:

• NECO 2002

The use of electrical fuses in domestic wiring is ____________

A. To prevent and electrical shock
B. To supply electricity to all the electrical appliances
C. To allow electricity to flow easily through the mains to all the circuits
D. To cut off the mains supply it too high a current flows
E. To fuse all the circuit into one

Question 5:

• NECO 2002

Which radiation is emitted when a beam of fast moving cathode rays is stopped by a heavy element?

A. Alpha rays
B. Gamma rays
C. Positive rays
D. Ultraviolet rays
E. X-rays