Raw materials
Market
Labour supply
Power supply
Correct answer is B
An industry whose products are bulky, perishables and fragile should be located close to the market. This is to make sure such goods are sold early and fast to avoid the goods getting bad or destroyed while on transit.
3.0
1.5
0.6
0.3
Correct answer is C
* produces a virtual image when object distance(u) is less than its focal length(f).
\(\frac{1}{f} = \frac{1}{u} - \frac{1}{v}\)
\(\frac{1}{v} = \frac{1}{f} + \frac{1}{u}\)
\(\frac{1}{15} + \frac{1}{10} = \frac{2 + 3}{30}\)
\(\frac{1}{v} = \frac{5}{30}\)
v = 6.0 cm
but m = \(\frac{v}{u} = \frac{6}{10} = 0.6\)
Note that the negative sign only shows the placement of the image. It has no effect on the magnification basically.
One of the problems facing industrial development in West African countries is
Inadequate large market
Inadequate infrastructure
Inadequate supply of labour
Unavailability of natural resources
Correct answer is B
Developing countries like those in west Africa frequently lack adequate physical and social infrastructure of all kinds and their substantial improvement is essential for rapid economic development. This has been a major setback on industrial development in the area.
F and X
X and C
C and F
F and 2F
Correct answer is B
No explanation has been provided for this answer.
0.50
0.67
0.75
1.13
Correct answer is D
\(_{g} \eta _{w} = \frac{ _g \eta _a}{ _a \eta _w}\)
= \(\frac{3}{2} \times \frac{1}{\frac{4}{3}}\)
= \(\frac{3}{2} \times \frac{3}{4}\)
= \(\frac{9}{8}\)
= 1.125
= 1.13 (to 2 d.p)