NECO Physics Past Questions, Answers & Explanations - Physics

Neco Physics Questions

Question 6:

Calculate the peak voltage of a mains supply of r.ms. value 220V.

Question 7:

Two 2.0Ω resistors can be combined circuit to give an overall resistance of ____________

Question 8:

An astronomical telescope which is being used to view a very distant object is said to be in normal adjustment if ____________

A The final image is at the near-point
B The image formed by the objective is before the focus of the eye piece
C The angular magnification is the ratio of the focal length of the eye-piece lens to that of the objective
D The foci dl the objective and the eye-piece coincide between the lenses
E The distance between the objective lens and the eye-piece is equal to the difference between their focal lengths.

Question 9:

A man standing 510m away from a wall sounds a whistle. The echo from the wall reaches him 3s later. Calculate the velocity of sound in air.