LAUTECH 2010 PHYSICS POST-UTME

PHYSICS
LADOKE AKINTOLA UNIVERSITY
2010
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1. D etermine the power in horse of a car that is exerting force of 5 x 10 5 N while moving at a constant speed of 10m/s.
A. 6khp
B. 7khp
C. 6.7khp
D. 7.6khp

2. T he frequency of a plane progressively were represented by the equation y = 4sin[200(22/7)t - 0.5t]
N:B 22/7 represents 'pi'
A. 100Hz
B. 100m/s
C. 1000m/s
D. 1000Hz

3. T he dimension of stress is
A.
ML -2
B.
ML -1 T -2
C.
ML -3 T -2
D.
ML 2 T -2

4. T he half life of a radioisotope is 92 seconds. The N/No left after 2 hours is
A. 54.22
B. 0.368
C. 650.59
D.3.0 x 10 -24

5. H ow much energy is stored in a 20-mH coil when it carries a current of 0.2A ?
A.5 x 10 4 J
B.10 x 10 -4 J
C.8 x 10 4 J
D.4 x 10 4 J

6. I f a radioactive material has a half life of 18days , what fraction of the radioactive nucleic will remain after 54 days?
A. 1/3
B. 3
C. 1/8
D. 8

7. W hat is the magnitude of the electric field at a field point 2m from a point charge of 4nC ?
A. 9Nc
B.9Nm -1
C.0.9NF -1
D.9Nc -1

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