Neco Physics 2009 Past Questions and Answers

Question 21:

• NECO 2009

A ball of mass 100g falls from a height of 5m onto a concrete floor and rebounds to a height of 3m. Calculate the energy lost. (g = 10ms^-2)

A. 2J
B. 20J
C. 100J
D. 1000J
E. 2000J

Question 22:

• NECO 2009

Two forces of magnitude 8N and 4N act at right angle to each other. The angle between the resultant and the 8N force is ____________

A. 23.9°
B. 26.6°
C. 29.5°
D. 60.0°
E. 63.4°

Question 23:

• NECO 2009

The defect of the eye lens which occurs as a result of weak ciliary muscles is called ____________

A. Astigmatism
B. Hypermetropia
C. Myopia
D. Presbyopia
E. Spherical aberration

Question 24:

• NECO 2009

Which of the following pairs of phenomena helps in the resolution of the wave-particle paradox of matter?

A. Compton effect and thermionic emission
B. Electron diffraction and refraction
C. Emission and absorption of light
D. Interference and polarization
E. Reflection and photoelectric effect

Question 25:

• NECO 2009

Which of the following phenomena is responsible for the spherical shape of soap bubbles?

A. Adhesion
B. Capillarity
C. Cohesion
D. Osmosis
E. Surface tension