Production of photocells; photocells can be used to make burglar alarms.
chrispohmomanyi answered the question on October 2, 2017 at 12:41
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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:
(I) Photoelectric current
(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)
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State two factors that affect period of waves in a stretched string.
(Solved)
State two factors that affect period of waves in a stretched string.
Date posted:
October 2, 2017
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Answers (1)
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Explain why the density of the same material changes with temperature increase.
(Solved)
Explain why the density of the same material changes with temperature increase.
Date posted:
October 2, 2017
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Answers (1)
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Define atomic number.
(Solved)
Define atomic number.
Date posted:
October 2, 2017
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Answers (1)
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Define Power.
(Solved)
define Power
Date posted:
October 2, 2017
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Answers (1)
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Define work
(Solved)
Define work
Date posted:
October 2, 2017
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Answers (1)
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Define mechanical advantage.
(Solved)
Define mechanical advantage.
Date posted:
October 2, 2017
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Answers (1)
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Explain why atmospheric pressure decreases towards high altitudes.
(Solved)
Explain why atmospheric pressure decreases towards high altitudes.
Date posted:
October 2, 2017
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Answers (1)
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Explain why it is easier to hear sounds at night than during the day.
(Solved)
Explain why it is easier to hear sounds at night than during the day.
Date posted:
October 2, 2017
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Answers (1)
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Explain why evaporation is always accompanied by a cooling effect.
(Solved)
Explain why evaporation is always accompanied by a cooling effect.
Date posted:
October 2, 2017
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Answers (1)
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Explain how demagnetization is achieved by heating a magnet, using the domain theory.
(Solved)
Explain how demagnetization is achieved by heating a magnet, using the domain theory.
Date posted:
October 2, 2017
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Answers (1)
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Explain why distilled water has to be added in car batteries often.
(Solved)
Explain why distilled water has to be added in car batteries often.
Date posted:
October 2, 2017
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Answers (1)
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Explain why television or computer screens often become very dusty as compared to their neighboring surfaces.
(Solved)
Explain why television or computer screens often become very dusty as compared to their neighboring surfaces.
Date posted:
October 2, 2017
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Answers (1)
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Explain why a lady wearing sharp heeled shoes is not likely to skid on a slippery mud road.
(Solved)
Explain why a lady wearing sharp heeled shoes is not likely to skid on a slippery mud road.
Date posted:
October 2, 2017
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Answers (1)
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A bus moves round a circular bend at a constant speed of 10m/s. Explain whether it is in equilibrium.
(Solved)
A bus moves round a circular bend at a constant speed of 10m/s. Explain whether it is in equilibrium.
Date posted:
October 1, 2017
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Answers (1)
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Explain how polarization of a simple cell affects its emf.
(Solved)
Explain how polarization of a simple cell affects its emf.
Date posted:
October 1, 2017
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Answers (1)
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Explain the importance of a fuse in domestic wiring.
(Solved)
Explain the importance of a fuse in domestic wiring.
Date posted:
October 1, 2017
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Answers (1)
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Explain why a ship made of steel will float on water while a coin made of steel sinks.
(Solved)
Explain why a ship made of steel will float on water while a coin made of steel sinks.
Date posted:
October 1, 2017
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Answers (1)
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A ship moves from a region in the sea with fresh water to a region of salty water its weight remaining constant. Explain what is...
(Solved)
A ship moves from a region in the sea with fresh water to a region of salty water its weight remaining constant. Explain what is observed.
Date posted:
October 1, 2017
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Answers (1)