Post Utme Physics Past Questions and Answers

Question 221:

A magnetic field is said to exist at a point if a force is ____________

A. Exerted on a stationary charge at that point
B. Exerted on a moving charge at that point
C. Deflected at that point
D. Strengthened at that point

Question 222:

In an a.c circuit that contains only a capacitor, the voltage lags behind the current by ____________

A. 90°
B. 180°
C. 30°
D. 60°

Question 223:

The particle emitted when \({ }^{39}{ }_{19} \mathrm{~K}\) decays to \({ }^{39}{ }_{19} \mathrm{~K}\) is ____________

A. Gamma
B. Beta
C. Electron
D. Alpha

Question 224:

The particle and wave nature of matter is demonstrated by ____________

A. Bragg's equation I
B. De Broglie equation
C. Schrodinger equation
D. Pauli's exclusive principle

Question 225:

The ray which causes gas molecules to glow is ____________

A. Cathode ray
B. Anode ray
C. Molecular ray
D. Gamma ray