State three observable phenomena where a particle behaves like waves. State the scientific principle underlying the operation of fibre optics.

(b) Explain each of the following terms as used in fibre optics: (i) core; (ii) cladding

Presidential system of government allows the

• A. President to be a member of the legislature
• B. Executive to be members of the Legislature
• C. Judiciary to be a part of the Executive
• D. President to elect ministers from outside the Legislature

Use the information to answer this question

Date.............Details........................

Feb........1 Purchased 400 units at N1.00 each

,, ........5 Purchased 200 units at N2.00 each

,,.........10 Purchased 200 units at N300 each

,, .........15 Issued 320 units

,,..........20 Issued 200 units at N4,00 each

,,..........25 Issued 120 units

Calculate the price per unit of closing stock using the periodic weighted average method.

• A. N3.20
• B. N3.00
• C. N2.20
• D. N2.00

All of the following describes conditions necessary for existence of a perfect market EXCEPT

• A. lack of homogeneity of goods
• B. perfect knowledge
• C. large buyers and sellers
• D. portability of goods

Two capacitors R1 = 4Ω and R2 = 5Ω are connected in parallel across a potential difference. If P1 and P2 represent power dissipated in R 1 and R2 respectively, then the ratio P1 : P2 is

• A. 4 : 5
• B. 5 : 4
• C. 16 : 25
• D. 25 : 16

An undertaking to repair a customer's vehicle for a certain period after it has been sold is

• A. After-sales service
• B. marketing mix
• C. market segmentation
• D. sales promotion

After the sentence, a list of possible interpretations of the sentence is given.

Choose the interpretation that you consider most appropriate for the sentence.

If Kunle hadn't been transferred to Kano his wife would not have resigned her teaching job. This means that

• A. Kunle was not transferred yet his wife resigned her job
• B. Kunle was transferred and his wife thought of resigning her job
• C. Kunle was transferred and so his wife had to resign her job
• D. Kunle's wife resigned though her husband wasn't transferred

The largest kola-nut producing vegetation zone in West Africa is the

• A. sahel savanna
• B. sudan savanna
• C. derived savanna
• D. mangrove swamp

A fable is a story in which________?

• A. allegations are made about characters
• B. animal is or things are used as characters
• C. there is an important setting
• D. the story is told in poetic form

The graph below shows;

• A. a decrease in quantity supplied
• B. an increase in supply
• C. a decrease in supply
• D. an increase in quantity