WAEC SSCE - Physics - 1996 (Objective)

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The diagram above represents a stationary wave set up in a string which is fixed at both ends. lf the frequency of the wave is 256Hz and the distance N1 N2 equals 1.5m, calculate the speed of the wave.

128ms^-1

192ms^-1

384ms^-1

768ms^-1

1536ms^-1

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The electric potential at point P in the diagram above can be expressed as

Q2/(4πεor2)

 Q/(4πεor2)

Q/(4πεor)

Q2/(4πεr2)

Q/(4πεor) 2

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ln the diagram above, the resistor has a resistance 8 ? while the reactances of the inductor and the capacitor are 10 ? and 16 ? respectively Calculate the current in the circuit

3.6A

3.8A

9.2A

10.0A

13.0A

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The diagram above represents a portion of a micrometer screw gauge in which the horizontal scale is in millimetres. What is the reading on the instrument?

3.72mm

3.50mm

3.30mm

3.28mm

3.22mm

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A ray of light is incident on a glass block as shown in the diagram above. If the reflected and the retracted rays are perpendicular to each other, what is the refractive index of the glass relative to air.?

1.65

1.58

1.52

1.50

1.48

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The diagram above illustrates an isolated metal sphere carrying charge W in a medium whose permittivity is so. The magnitude of the electric field intensity at P can be expressed as

Q2/(4πεor2)

Q/(4πεor2)

• Q/(4πεor)

Q2/(4πεr2)

Q/(4πεor) 2

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The graph above shows the relationship between sin i and sin r for a ray of light in air incident on a liquid surface. If i and r are respectively angles of incidence and refraction, deduce the refractive index of the liquid from the graph

1.63

1.50

1.33

1.25

0.08

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The diagram above illustrates a variation of the displacement y of a wave particle with time t. lf the velocity of wave is 250ms^-1, calculate the distance between two successive particles which are in phase

20m

2.5m

3.0m

5.0m

50.0m

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The diagram above illustrates the velocity-time graph of the motion of a body. Calculate the total distance covered by the body

50m

65m

175m

225m

300m

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The diagram above illustrates the conversion of a galvanometer of resistance 29 to an ammeter. The galvanometer gives a full-scale deflection for a current of 10mA. Calculate the value of R.

2.0 x 10³ ?

2.0 x 10² ?

2.0 x 10^-1 ?

2.0 x 10^-2 ?

2.0 x 10^-3 ?