1. To increase sensitivity
2. To increase visibility of the scale. It acts as a magnifying glass.
chrispohmomanyi answered the question on October 4, 2017 at 06:24
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State two effects of anomalous expansion of water.
(Solved)
State two effects of anomalous expansion of water.
Date posted:
October 4, 2017
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Answers (1)
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Give three ways in which the power of an electric motor can be increased.
(Solved)
Give three ways in which the power of an electric motor can be increased.
Date posted:
October 4, 2017
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Answers (1)
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State the effect of adding sodium chloride to ice at 0 degrees.
(Solved)
State the effect of adding sodium chloride to ice at 0 degrees.
Date posted:
October 4, 2017
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Answers (1)
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Explain the function of the small hole at the side of the cover of a ball point pen.
(Solved)
Explain the function of the small hole at the side of the cover of a ball point pen.
Date posted:
October 4, 2017
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Answers (1)
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Why is the inner part of a pinhole camera painted black?
(Solved)
Why is the inner part of a pinhole camera painted black?
Date posted:
October 4, 2017
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Answers (1)
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How does a syringe draw water from a beaker.
(Solved)
How does a syringe draw water from a beaker.
Date posted:
October 4, 2017
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Answers (1)
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Explain why a concave meniscus is formed on the surface of water while convex meniscus on mercury liquid.
(Solved)
Explain why a concave meniscus is formed on the surface of water while convex meniscus on mercury liquid.
Date posted:
October 4, 2017
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Answers (1)
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State the purpose of carbon powder in a dry cell.
(Solved)
State the purpose of carbon powder in a dry cell.
Date posted:
October 4, 2017
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Answers (1)
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State two ways of increasing the mechanical advantage of a hydraulic machine.
(Solved)
State two ways of increasing the mechanical advantage of a hydraulic machine.
Date posted:
October 4, 2017
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Answers (1)
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State and explain how stability of the candle changes as it continues to burn.
(Solved)
State and explain how stability of the candle changes as it continues to burn.
Date posted:
October 4, 2017
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Answers (1)
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An FM radio station aired its transmission at the frequency of 100 Mega Hertz. Calculate its wavelength given that the velocity of the wave is...
(Solved)
An FM radio station aired its transmission at the frequency of 100 Mega Hertz. Calculate its wavelength given that the velocity of the wave is 3.0 x 10^8 m/s
Date posted:
October 2, 2017
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Answers (1)
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From the expression P = pgh. State the factors that affect pressure of a fluid.
(Solved)
From the expression P = pgh. State the factors that affect pressure of a fluid.
Date posted:
October 2, 2017
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Answers (1)
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Give one function of the cylindrical anodes in the CRO. tube.
(Solved)
Give one function of the cylindrical anodes in the CRO. tube.
Date posted:
October 2, 2017
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Answers (1)
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Atmospheric pressure decreases with increase in height. Explain
(Solved)
Atmospheric pressure decreases with increase in height. Explain
Date posted:
October 2, 2017
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Answers (1)
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What is a bimetallic strip.
(Solved)
What is a bimetallic strip.
Date posted:
October 2, 2017
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Answers (1)
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Give two external factors that affect the rate of evaporation of a liquid.
(Solved)
Give two external factors that affect the rate of evaporation of a liquid.
Date posted:
October 2, 2017
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Answers (1)
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(Solved)
Briefly describe how you would make an electromagnet
Date posted:
October 2, 2017
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Answers (1)
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Describe one practical application of the Photoelectric effect.
(Solved)
Describe one practical application of the Photoelectric effect.
Date posted:
October 2, 2017
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Answers (1)
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In a photoelectric effect experiment, light was directed incident to a metal surface. The wavelength of the light was then doubled maintaining the intensity constant....
(Solved)
In a photoelectric effect experiment, light was directed incident to a metal surface. The wavelength of the light was then doubled maintaining the intensity constant. Explain the resulting effect to:
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(ii). Kinetic energy of the Photoelectrons.
(iii). Work function of the metal.
Date posted:
October 2, 2017
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Answers (1)
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State two factors that affect the heating effect of current flowing through a wire.
(Solved)
State two factors that affect the heating effect of current flowing through a wire.
Date posted:
October 2, 2017
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Answers (1)