![A submarine is observed to rise from a real depth of 80m to 60m in water. Calculate the change in apparent depth. [Refraction index of water 4/3]](https://erudites.ng/wp-content/uploads/2020/06/past-questions-and-answers.jpg)
by Sunday | Nov 12 | Physics JAMB
A. 45 m B. 80 m C. 15 m D. 60 m Correct Answer: Option C – 15 m 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...
by Sunday | Nov 12 | Physics JAMB
A. at the centre of curvature B. at the radius of curvature C. at infinity D. 10 cm from the focus Correct Answer: Option A – at the centre of curvature
by Sunday | Nov 12 | Physics JAMB
A. a rectifier in a d.c circuit B. an amplifier in d.c circuit C. an anplifier in an a.c circuit D. a rectifier in an a.c circuit Correct Answer: Option D – a rectifier in an a.c circuit
by Sunday | Nov 12 | Physics JAMB
A. boron and antimony B. boron and antimony C. aluminium and indium D. arsenic and antimony Correct Answer: Option D = arsenic and antimony Explanation An n-type semi conductor is usually formed by dopping the semi conductor(a four valent element)with a five valent...
by Sunday | Nov 12 | Physics JAMB
I. The number of neutrons released exceeds the number that caused the fission. II. There is loss of mass. III. Energy is produced. IV. Smaller nuclei merge to form larger nuclei A. II, III and IV only B. I, II and IV only C. I, II and III only D. I, III and IV only...
Land Law and the Consequences of Unauthorized Land Transfers in Nigeria
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