PHYSICS
JAMB 2006 - Question 38
Physics 2006 JAMB Past Questions - Question 38: A submarine is observed to rise from a real depth of 80 m to 60 m in water. Calculate the change in apparent depth The
Choose the correct answers from the options given.
A:
B:
C:
D:
Correct Answer
B
Explanation
Refraction index (n)= (Real depth)/App. depth
For 80 m Real depth: (4)/3 = (80)/App. depth
App. dept = (80 x 3)/4 = 60 m
For 60 m real depth; (4)/3 = (60)/ App. depth
App. depth = (60 x 3)/4 = 45 m
∴change in App. depth = 60 -45 = 15 m
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