(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]

Choose the most appropriate optionopposite in meaning of the underlined word.

In his quest forsolidarity, the party leader undertook a nation-wide tour?

• A. unity
• B. resistance
• C. mobilization
• D. re-organization

The process in which complex substances are broken down into simpler ones is referred to as

• A. anabolism
• B. catabolism
• C. metabolism
• D. tropism

The process by which the earth's surface is generally reshaped and lowered is known as

• A. pediplanation
• B. denudation
• C. synclination
• D. subsidence

The idea of separation of powers as a political concept was developed by

• A. Louis Mostesquieu
• B. A.V Dicey
• C. Thomas Hobbes
• D. Kar Marx

In a democracy political sovereignty is vested in the

• A. judges
• B. people
• C. legislature
• D. executive

From the list of words lettered A to D, choose the one that is most nearly opposite in meaning to the underlined word and that will, at the same time, correctly fill the gap in the sentence. It would have been my pleasure to accept your invitation but I have to ________ it because of a previous engagement.

• A. jettison
• B. defer
• C. suspend
• D. decline

In a perfect market price and quantity to be bought are determined by the

• A. consumers and retailers
• B. producers and wholesalers
• C. forces of demand and supply
• D. interest of government and producers

The characteristic which ensures that money is free from forgery is its?

• A. legality
• B. durability
• C. recongnition
• D. credibility

The disciples became terrified when they saw Jesus walking on the sea because

• A. they thought He would drown
• B. they thought He was a ghost
• C. they lacked faith in Him
• D. there was a great storm