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Physics Past Questions and Answers

Jamb Physics Questions

Question 2146:

Which of the following statement about the electromagnet shown above is correct?

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A When the current flows from A to B, the end A will be in north pole
B When the current flows from A to B, the end A will be south pole
C When the current flows from A to B, the end B will be north pole
D None of the above

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Question 2147:

Calculate the velocity ratio of a screw jack of pitch 0.2cm if the length of the tommy bar is 23cm

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A 230\(\pi\)
B 23\(\pi\)
C 70\(\pi\)
D 140\(\pi\)

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Question 2148:

The Earth's magnetic equator passes through Jos in Nigeria. At Jos, the

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A Angle of variation is zero
B Magnetic declination is 90
C Angle of dip is zero
D Horizontal component at the Earth's field is zero

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Question 2149:

The Earth's magnetic equator passes through Jos in Nigeria. At Jos, the

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A Angle of variation is zero
B Magnetic declination is 90
C Angle of dip is zero
D Horizontal component at the Earth's field is zero

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Question 2150:

A car moving at 20m/s with its horn blowing (f = 1200Hz) is chasing another car going at 15m/s. What is the apparent frequency of the horn as heard by the driver being chased?

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A 1.22KHz
B 2.40KHz
C 8.12KHz
D 1.22Hz

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