1994 - JAMB Physics Past Questions and Answers - page 5
41
The fig above shows a uniform wood of weight 200Nand length 50m. It is pivoted at one end and suspended by a cord at the other end at an angle of 30 degrees to the wood. calculate the tension in the cord if the wood is horizontal
A
10N
B
20N
C
100N
D
200N
correct option: d
Users' Answers & Comments42
In the fig above if the atmospheric pressure is 760mm, the pressure of the chamber G is
A
660mm
B
690mm
C
830mm
D
860mm
correct option: c
Users' Answers & Comments43
In the fig above, XY is of length 1m, The value of R at balance point Z is
A
3.0Ω
B
13.3Ω
C
15.0Ω
D
30.0Ω
correct option: d
Users' Answers & Comments44
In the circuit diagram above, calculate the current in the 12 Ω resistor if the cell has an emf of 12V and an internal resistance of 1Ω
A
0.8A
B
1.0A
C
1.6A
D
2.4A
correct option: d
Users' Answers & Comments45
In the curve above, PQRST represents an alternating voltage of frequency 50Hz. The time interval between points P and R on the graph is
A
25s
B
1/50s
C
1/100s
D
1/200s
correct option: c
Users' Answers & Comments