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Physics Past Questions and Answers

Jamb Physics Questions

Question 2306:

An isotope has an initial activity of 120 Bq. 6 days later its activity is 15 Bq. The half-life is?

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A 3 days
B 2 days
C 1 day
D 4 days

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Question 2307:

The secondary pigments consist of?

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A Blue, green, and violet
B Yellow, green, and magenta
C Magenta, yellow, and cyan
D Red, green, and blue

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Question 2308:

A person standing waist-deep in a swimming pool appears to have short legs because of light?

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A Diffraction
B Refraction
C Reflection
D Interference

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Question 2309:

A tuning fork having a frequency of 312 Hz emits a wave which has a wavelength of 1.10 m. Calculate the velocity of sound

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A 312.0 ms\(^{-1}\)
B 110.0 ms\(^{-1}\)
C 343.2 ms\(^{-1}\)
D 686.4 ms\(^{-1}\)

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Question 2310:

When the plate area of a capacitor increases?

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A The voltage can withstand increase
B The capacitance decreases
C The capacitance is unaffected
D The capacitance increases

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