1. Thick plane mirrors produce multiple images.
2. The polished part of the mirror can be scratched or peel of.
3. mirrors absorb some of the incident light.
chrispohmomanyi answered the question on October 5, 2017 at 10:41
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State what happens to the size of the the image if the pin hole camera is moved away from the Object.
(Solved)
State what happens to the size of the the image if the pin hole camera is moved away from the Object.
Date posted:
October 5, 2017
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Answers (1)
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Give a reason why the grid in a cathode ray oscilloscope is biased negatively.
(Solved)
Give a reason why the grid in a cathode ray oscilloscope is biased negatively.
Date posted:
October 5, 2017
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Answers (1)
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State two uses of radioactivity in hospitals.
(Solved)
State two uses of radioactivity in hospitals.
Date posted:
October 5, 2017
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Answers (1)
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Silicon was dipped with boron to form an extrinsic semi-conductor. What are the majority charge carriers in it.
(Solved)
Silicon was dipped with boron to form an extrinsic semi-conductor. What are the majority charge carriers in it.
Date posted:
October 5, 2017
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Answers (1)
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State two functions of a gold leaf electroscope.
(Solved)
State two functions of a gold leaf electroscope.
Date posted:
October 5, 2017
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Answers (1)
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Explain why the leaf of a positively charged electroscope falls when a candle flame is brought near its cap.
(Solved)
Explain why the leaf of a positively charged electroscope falls when a candle flame is brought near its cap.
Date posted:
October 5, 2017
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Answers (1)
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State four possible sources of background radiation.
(Solved)
State four possible sources of background radiation.
Date posted:
October 5, 2017
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Answers (1)
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Explain what is meant by background radiation.
(Solved)
Explain what is meant by background radiation.
Date posted:
October 5, 2017
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Answers (1)
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State two applications of moments.
(Solved)
State two applications of moments.
Date posted:
October 5, 2017
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Answers (1)
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Explain how wavelength varies with depth of water in a tank of variable length.
(Solved)
Explain how wavelength varies with depth of water in a tank of variable length.
Date posted:
October 5, 2017
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Answers (1)
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A tungstern filament lamp contains Argon gas at low pressure. Why is air not used?
(Solved)
A tungsten filament lamp contains Argon gas at low pressure. Why is air not used?
Date posted:
October 5, 2017
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Answers (1)
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What is the difference between P-type and N-type semiconductors.
(Solved)
What is the difference between P-type and N-type semiconductors.
Date posted:
October 5, 2017
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Answers (1)
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A scout blew a trumpet some distance from a wall, and heard its echo after 3.6 seconds later. How far is the wall from the...
(Solved)
A scout blew a trumpet some distance from a wall, and heard its echo after 3.6 seconds later. How far is the wall from the scout? (speed of sound in air is 330 m/s)
Date posted:
October 4, 2017
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Answers (1)
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Name one form of energy other than heat produced by a red-hot electric element.
(Solved)
Name one form of energy other than heat produced by a red-hot electric element.
Date posted:
October 4, 2017
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Answers (1)
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What is kilowatt hour?
(Solved)
What is kilowatt hour?
Date posted:
October 4, 2017
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Answers (1)
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State one property of electromagnetic waves.
(Solved)
State one property of electromagnetic waves.
Date posted:
October 4, 2017
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Answers (1)
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State the condition under which a converging lens is used as a magnifying glass.
(Solved)
State the condition under which a converging lens is used as a magnifying glass.
Date posted:
October 4, 2017
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Answers (1)
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State two ways of increasing the size of the image in a pinhole camera.
(Solved)
State two ways of increasing the size of the image in a pinhole camera.
Date posted:
October 4, 2017
.
Answers (1)
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State the type of wave produced when a wire fixed at both ends is jerked.
(Solved)
State the type of wave produced when a wire fixed at both ends is jerked.
Date posted:
October 4, 2017
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Answers (1)
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State one condition required for electromagnetic induction to occur.
(Solved)
State one condition required for electromagnetic induction to occur.
Date posted:
October 4, 2017
.
Answers (1)