Waec Physics 2014 Past Questions and Answers

Question 46:

• WAEC 2014

The energy required to separate the nucleus in an atom completely is known as

A. Mass defect of the atom
B. Electron binding energy
C. Excitation energy
D. Nuclear bnding energy

Question 47:

• WAEC 2014

Which of the following statements is the major advantage of nuclear fusion over nuclear fission?

A. Nuclear fusion releases more energy
B. More neutrons are released in fusion than in fission
C. Fussion does not release as much dangerous radiation as fission
D. Fusion reactions occur more readily than fission

Question 48:

• WAEC 2014

An aluminum foil is placed across a beam of radiation from a radioactive source. Which of the following types of radiation will be stopped by it?

A. Alpha and beta particles
B. Alpha and gamma particles
C. Beta and gamma particles
D. Gamma particles only

Question 49:

• WAEC 2014

An element of nucleon number P and atomic number Q emits an alpha particle from its nucleus. The resultant numbers of the new element formed are respectively

A. P - 4 and Q + 2
B. P - 4 and Q - 2
C. P + 2 and Q + 2
D. P + 2 and Q - 2

Question 50:

• WAEC 2014

A particle is projected horizontally at 10 ms\(^{-2}\) from the top of a tower 20 M high. Calculate the horizontal distance travelled by the particle when it hits the level ground. [g= 10 ms\(^{-2}\)