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A man fixed a large concave mirror of focal length 2 m, 160 cm from his face. State three characteristics of his image in the mirror.
Date posted:
October 1, 2017
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Hammering of a magnet demagnetizes a magnet. Explain how this takes place.
Date posted:
October 1, 2017
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A charged electroscope is used in electrostatics study. State two of its uses.
Date posted:
October 1, 2017
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What does the following statement represent? ‘like charges repel while unlike charge attract’.
Date posted:
October 1, 2017
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State the kind of image formed in a pinhole camera when the pinhole is enlarged.
Date posted:
October 1, 2017
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A barber places two mirrors in parallel. State the number of images formed if a client sat between them.
Date posted:
October 1, 2017
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An image is always formed upside down in a pin hole camera. State the reason.
Date posted:
September 29, 2017
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Give a reason why mercury is a suitable liquid for use in a barometer.
Date posted:
September 29, 2017
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A girl opened a strong perfume in class bought from the beauty shop. State the reason why the perfume was detected throughout the room.
Date posted:
September 29, 2017
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Differentiate between floatation and sinking in terms Archimedes principle.
Date posted:
September 28, 2017
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State two conditions that must be met for a gas to obey pressure law.
Date posted:
September 28, 2017
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State two properties which makes the oil suitable for use in machines
Date posted:
September 28, 2017
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Give a reason why ink is most likely to ooze out of a pen when one is up in a plane.
Date posted:
September 28, 2017
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Distinguish between velocity and speed.
Date posted:
September 28, 2017
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State any two ways of minimizing heat gains to a substance placed in a vacuum flask.
Date posted:
September 28, 2017
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State two factors that lowers the freezing point of ice.
Date posted:
September 28, 2017
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Explain why ice skaters use sharp – edged shoes to slide on ice.
Date posted:
September 28, 2017
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A body is initially in motion. If no external force acts on the body, describe the subsequent motion.
Date posted:
September 28, 2017
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Apart from friction, name another factor that reduces efficiency in machines.
Date posted:
September 28, 2017
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When does total internal reflection take place.
Date posted:
September 28, 2017
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Define Critical angle.
Date posted:
September 28, 2017
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Explain how a transverse stationary wave is generated using a string.
Date posted:
September 28, 2017
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Explain why charged conductor mounted on an insulator will lose its charge after some time.
Date posted:
September 28, 2017
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State the mode by which heat is lost from a black can filled with hot water.
Date posted:
September 28, 2017
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What is elastic collision.
Date posted:
September 28, 2017
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Distinguish between evaporation and boiling.
Date posted:
September 28, 2017
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Explain how air pollution by smoke from a factory chimney can be minimized using a charged object.
Date posted:
September 28, 2017
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Explain why water pipe bursts are common in countries near the poles
Date posted:
September 28, 2017
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State any two factors that affect the earth's gravitational force.
Date posted:
September 28, 2017
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State three factors that affect the pitch of a stretched string.
Date posted:
September 28, 2017