Physics Past Questions, Answers, And Explanations - Physics

Physics Questions

Question 4476:

NECO 2003

Which of the following statement(s) is/are correct about the isotopes of an elements? They have the same

I. chemical properties
II. nucleon number
III proton number

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A I only
B II only
C I and II only
D I and III only
E I,II and III

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Question 4477:

NECO 2003

Lenz’s law of electromagnetic induction states that ____________

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A A force is exerted on a current carrying conductor in a magnetic field
B The induced current in a conductor is in such a direction as to oppose the change producing it
C The magnitude of the induced electromotive force in a circuit is proportional to the rate of change of the number of lines of force linking the circuit
D The magnitude of the induced electromotive force is proportional to the current producing the magnetic flux
E Whenever there is a change in the magnetic flux linked with the circuit, an electromotive is induced

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Question 4478:

NECO 2003

An object is placed 30 cm in front of a concave mirror of focal length 20cm. Calculate the distance between the object and the image.

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