1991
A team trap is a component of the apparatus used in determining the specific latent heat of vaporisation of steam. In the steady steady state, the steam trap
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1991 WAEC SSCE Physics Past Questions
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1991
The boiling point of a liquid depends on the following except the
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1991
A ray of light is incident at an angle of 30o on a glass prism of refractive index 1.5. Calculate the angle through which the ray is minimally deviated in the prism. (The medium surrounding the prism is air)
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1991
In the arrangement illustrated above, Y and B are yellow and blue transparent light filters respectively through the filters is
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1991
Two mirrors are inclined as shown in the diagram. A ray of light RO strikes the arrangement at O and emerges along PO. The emergent ray has been deviated through
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1991
Two forces, whose resultant is 100N are perpendicular to each other. If one of them makes an angle of 60o with the resultant, calculate the magnitude. (Sin 60o = 0.8660, Cos 60o = 0.500)
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1991
what part of the camera corresponds to the iris of the eye?
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1991
At which of the following distances from the lens should a slide be placed on a slide projector if f is the focal length of the projector length?
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1991
The intensity of light falling on the film in a camera depend on the i. brightness of the object. ii. diameter of the aperture stop. iii. speed of the shutter. Which of the statements is/are correct?
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1991
Which of the following statements is not correct? Isotopes of an element have
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1991
Which of the following statements above viscosity are correct? when a ball falls through a viscous liquid i. viscosity opposes the gravitational force on the ball. ii. viscosity opposes the upthrust on the ball. iii. vis…
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1991
Which of the following are true of plane-polarised right? i. Plane polarisation of light is the formation of hydrogen bubbles on the particle of light. ii. Plane components. iii. A plane polarised light vibrates in one p…
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1991
The graph above shows the expansion of water as the temperature increases from 0°C. Which of the following deductions from the graph are true? i. Water has its maximum density at Q. ii. The volume of water is greater at…
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1991
In which of the following is a stationary wave produced?i. A vibrating turning fork held near the end of a resonance tube closed at one end.ii. A string tightly stretched between two points and plucked at its middle.iii.…
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1991
Which of the following statements is true of the diagram shown above?
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1991
(a)(i) By means of a labelled diagram, describe the mode uf operation of a modern X-ray tube.(ii) State the energy transformation which takes place during the operation.(b) Explain the terms hardness and intensity as app…
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1991
(a) Explain the terms reactance and impedance in an a.c circuit.(b) A source of e.m.f. 240 v and frequency 50 Hz is connected to a resistor, an inductor and a capacitor in series. When the current in the capacitor is 10A…
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1991
(a) Distinguish between temperature and heat. State the units in which they are measured(ii) State two physical properties used for measuring temperature.(b) (i) Describe, with the aid of a diagram, how the upper fixed p…
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1991
(a) Explain the terms:- uniform acceleration and average speed.(b) A body at rest is given an initial uniform acceleration of 8.0ms\(^{-2}\) for 30s after which the acceleration is reduced to 5.0ms\(^{-2}\) for the next…
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