Neco Physics 2009 Past Questions and Answers

Question 6:

• NECO 2009

An effort P applied at one end of a crowbar just overcomes the resistance W at the lid of a tin. The mechanical advantage of the crowbar is expressed as ____________

A. W + P
B. P - W
C. \(\frac{w}{p}\)
D. \(\frac{p}{w}\)
E. Wp

Question 7:

• NECO 2009

The phenomenon of photoelectric effect is used in the following EXCEPT

A. Automatic doors
B. Bugler alarm
C. Electric fire alarm
D. Sound production from film tracks
E. Television cameras

Question 8:

• NECO 2009

Calculate the work done in charging a capacitor of capacitance 20µF through a potential difference of 1000V.

A. 0.02 J
B. 0.10 J
C. 0.20 J
D. 1.00 J
E. 10.00 J

Question 9:

• NECO 2009

Arrange the following in the order of their increasing frequency.

I. Visible light
II. Gamma rays
III. Radio waves
IV. Infra-red radiation
V. Ultra-violet radiation

A. I, II, III, IV, V
B. II, III, IV, V, I
C. III, IV, V, I, II
D. IV, III, I. V, II
E. III, IV, I,V, II

Question 10:

• NECO 2009

Two forces A and B act at a point. If their resultant is [given by] (B - A) in the direction of B, then ____________

A. A and B are equal
B. A is greater than B
C. The angle between A and B is 0°
D. The angle between A and B is 90°
E. The angle between A and B is 180°