Changing the object distance by moving closer or away from the object.
Changing the length of the pinhole camera.
lendiritu answered the question on November 24, 2017 at 09:01
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State one similarity of images formed by a convex mirror and a plane mirror.
(Solved)
State one similarity of images formed by a convex mirror and a plane mirror
Date posted:
November 24, 2017
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Answers (1)
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State the advantages of using mercury as a liquid in glass thermometer.
(Solved)
State the advantages of using mercury as a liquid in glass thermometer.
Date posted:
November 24, 2017
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Answers (1)
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Explain why water wets glass tubes.
(Solved)
Explain why water wets glass tubes.
Date posted:
November 24, 2017
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Answers (1)
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State two applications of capillary action
(Solved)
State two applications of capillary action.
Date posted:
November 24, 2017
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Answers (1)
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State the first and the second Newton’s laws of motion
(Solved)
State the first and the second Newton’s laws of motion
Date posted:
November 23, 2017
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Answers (1)
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State the laws of refraction and refractive...
(Solved)
State the laws of refraction and refractive index
Date posted:
November 23, 2017
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Answers (1)
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Define the term refraction
(Solved)
Define the term refraction
Date posted:
November 23, 2017
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Answers (1)
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Calculate the distance in metre traveled by motor cycle moving with a uniform speed of 120 km/h in 50 seconds.
(Solved)
Calculate the distance in metre traveled by motor cycle moving with a uniform speed of 120 km/h in 50 seconds.
Date posted:
November 23, 2017
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Answers (1)
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What is meant by the following terms: a. displacement b. speed c. average speed
(Solved)
What is meant by the following terms:
a. displacement
b. speed
c. average speed
Date posted:
November 23, 2017
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Answers (1)
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The study of motion is divided into two parts. Name them
(Solved)
The study of motion is divided into two parts. Name them
Date posted:
November 23, 2017
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Answers (1)
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State any two errors that are likely to be encountered with using a metre rule to measure length.
(Solved)
This is under Measurement.
Date posted:
November 21, 2017
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Answers (1)
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Give reasons why mercury is prefered to water as a barometric liquid.
(Solved)
This is under Measurement of Pressure.
Date posted:
November 21, 2017
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Answers (1)
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What are the disadvantages of using alcohol as a thermometric liquid?
(Solved)
This is under thermal expansion.
Date posted:
November 21, 2017
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Answers (1)
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Name the branches of Physics.
(Solved)
This is under Introduction to Physics.
Date posted:
November 21, 2017
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Answers (1)
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State three ways in which an electromagnet could be made more powerful.
(Solved)
This is under electricity and magnetism.
Date posted:
November 21, 2017
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Answers (1)
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Explain why the feet feel colder when a person stands on a cemented floor than when on a wooden floor.
(Solved)
This is under Heat transfer.
Date posted:
November 21, 2017
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Answers (1)
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Explain why luggage compartments are situated in the lower parts of buses.
(Solved)
This is under equilibrium and center of gravity.
Date posted:
November 21, 2017
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Answers (1)
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Explain why a glass window soon becomes dusty when wiped dry with a dry cloth on a dry day.
(Solved)
This is under Electrostatics.
Date posted:
November 21, 2017
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Answers (1)
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Explain how heat loss through conduction and radiation is minimized in a vacuum flask
(Solved)
Explain how heat loss through conduction and radiation is minimized in a vacuum flask.
Date posted:
November 21, 2017
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Answers (1)
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When a brush is in water,the bristles spread but when it is taken out of water, the bristles cling together. Explain
(Solved)
When a brush is in water,the bristles spread but when it is taken out of water, the bristles cling together. Explain.
Date posted:
November 21, 2017
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Answers (1)