Past Questions And Answers
(a) Define binding energy in an atom.
(b) List three evidence to support the claim that X-rays are electromagnetic waves.
(c) List three peaceful uses of nuclear energy.
(d) Light of wavelength 4.5 x 10\(^{-7}\) in is incident on a metal resulting in the emission of photo electrons. If the work function of the metal is 3.0 x 10\(^{-9}\) J, calculate the:
(i) frequency of the incident light;
(ii) energy of the incident light;
(iii) energy of the photoelectrons. [Speed of light = 3.0 x 10\(^8\) ms\(^{-1}\), h = 6.6 x 10\(^{-34}\) Js]
View Discussion (0)WAEC 2018 THEORYWhich of the following is a form of sales promotion
- A. advertising on radio
- B. offering free sample
- C. distributing printed materials
- D. advertising on television
Which of the following activities does not belong to the extractive industry?
- A. Drilling
- B. Mining
- C. Barbing
- D. Farming
In the diagram, P, Q and R are three points in a plane such that the bearing of R from Q is 110o and the bearing of Q from P is 050o. Find angle PQR.
- A. 60o
- B. 70o
- C. 120o
- D. 160o
The relative atomic mass of a naturally occurring lithium consisting of 90% 7/3Li and 10% 6/3Li is
- A) 6.2
- B) 6.8
- C) 7.1
- D) 6.9
Product differentiation is achieved by
- A. packaging and branding
- B. packaging and grading
- C. market segmentation
- D. outdoor advertising
The diagram below is an illustration of the human sperm. The part labelled I is the
- A. acrosome
- B. nucleus
- C. mitochondrion
- D. tail
A permit that allows an importer to bring a certain quantity of foreign goods into a country is_________
- A. Import monopoly
- B. Import licence
- C. Import quota
- D. Embargo
Agape is another name for?
- A) Divine love
- B) God's love for the church
- C) God's love for Jesus Christ
- D) God's love towards man.
Which of the following ions will migrate to the cathode during electrolysis?
- A. Zinc ions
- B. Chloride ions
- C. Sulphide ions
- D. Tetraoxosulphate (Vl) ions