Waec Physics 2001 Past Questions and Answers

Question 51:

• WAEC 2001

(a) What is meant by 'a beam of polarised light?
(b) With the aid of well labelled diagrams, illustrate the action in of a polaroid spectacle on a beam of sunlight.

Question 52:

• WAEC 2001

(a) Explain how a gas can be made to conduct electricity.
(b) Name the electric charge carriers in gases.

Question 53:

• WAEC 2001

(a) State two properties of cathode rays.
(b) Explain how the intensity and energy of cathode rays may be increased.

Question 54:

• WAEC 2001

(a) The mass and wavelength of a moving electron are 9.0 x 10\(^{-31}\) kg and 1.0 x 10\(^{-10}\)m respectively. Calculate the kinetic energy of the electron. [ h = 6.6 x 10\(^{-34}\) Js]

Question 55:

• WAEC 2001

The above reprt the graph electron energy against the frequency of the radiation incident on a metal surface. lnterprete the;
(i) slope of the graph;
(ii) intercept, OC;
(iii) intercept, OK.