2014 - JAMB Physics Past Questions and Answers - page 5
41
What type of reaction is represented by the equation \(^{2}_{1}X+^{2}_{1}X\rightarrow^{3}_{2}Y+^{1}_{0}n+Energy\)
A
Ionization
B
Fusion
C
Fission
D
Chain
correct option: b
Users' Answers & Comments42
A glass bottle of initial volume 2 x 104 cm3 is heated from 20oC to 50oC. If the linear expansivity of glass is 9 x 106K-1, the volume of the bottle at 50oC is
A
20016.2cm3
B
20005.4cm3
C
20008.1cm3
D
20013.5cm3
correct option: a
\(\gamma = \frac{V_2 - V_1}{V(\theta)}\)
\(3(9 \times 10^4) = \frac{V_2 - 2 \times 10^4}{2 \times 10^4(30)}\)
V2 - 2 x 104 = 2 x 104 (30) x 3 (9 x 10-6)
V2 = 2 x 104 2 x 104 (30) x 3 (9 x 10-6)
V2 = 16.2 + 2 x 104
V2 = 20016.2cm3
Users' Answers & Comments\(3(9 \times 10^4) = \frac{V_2 - 2 \times 10^4}{2 \times 10^4(30)}\)
V2 - 2 x 104 = 2 x 104 (30) x 3 (9 x 10-6)
V2 = 2 x 104 2 x 104 (30) x 3 (9 x 10-6)
V2 = 16.2 + 2 x 104
V2 = 20016.2cm3