Physics Past Questions And Answers
The pair of musical instruments that works on the vibration of air in pipes is
- A. piano and the organ
- B. guitar and the flute
- C. trumpet and the violin
- D. flute and the trumpet
From the diagram below, if the potential difference across the resistor, capacitor and inductor are 60V, 120V and 30V respectively, the effective potential difference is
- A. 81
- B. 67
- C. 59
- D. 73
A given mass of gas has a pressure of 80 Nm−2 at a temperature of 47oC. If the temperature is reduced to 27oC with volume remaining constant, the new pressure is?
- A. 46.0 Nm−2
- B. 75.0 Nm−2
- C. 80.0 Nm−2
- D. 85.3 Nm−2
Musical instruments playing the same note can be distinguished from one another owing to the difference in their
- A. quality
- B. pitch
- C. intensity
- D. loudness
(a) Define diffusion
(b) State Graham's law of diffusion
View Discussion (0)WAEC 2004 THEORYIn the molecular explanation of conduction, heat is transferred by the
- A. Free electrons
- B. Free atoms
- C. Free molecules
- D. Free solids
The power of the lens is +2.5D. What is the radius of the curvature?
- A. 2.5 cm
- B. 25.0 cm
- C. 40.0 cm
- D. 80.0 cm
If the decay constant of a radioactive substance is 0.231s1, the half-life is?
- A) 3.00 s
- B) 0.12 s
- C) 0.33 s
- D) 1.50 s
Two parallel plates at a distance of 8.0 x 10-3m apart are maintained at a p.d of 600 volts with the negative plate earthed. What is the electric field strength?
- A. 4.8 Vm-1
- B. 75.0Vm-1
- C. 4800.0Vm-1
- D. 75000.0Vm-1
The volume of a given mass of gas at 27oC and 800 mmHg is 76cm2. Calculate its volume at s.t.p
- A. 100.0 cm3
- B. 72.8 cm3
- C. 60.0 cm3
- D. 36.4 cm3