1. A ray close and parallel to the the principal axis is reflected through the principal focus.
2. A ray travelling through the principal focus or appearing to be passing through the principal focus is reflected parallel to the principal axis.
chrispohmomanyi answered the question on September 19, 2017 at 12:07
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Electrons emitted from a metal when light of a certain frequency is shone on the metal are
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Date posted: September 19, 2017. Answers (1)
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Date posted: September 19, 2017. Answers (1)
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Date posted: September 19, 2017. Answers (1)
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Date posted: September 19, 2017. Answers (1)
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Date posted: September 19, 2017. Answers (1)
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Date posted: September 19, 2017. Answers (1)
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Date posted: September 19, 2017. Answers (1)
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A copper calorimeter of mass 60g is filed with 100g of water at 250C. Steam at a normal
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Date posted: September 19, 2017. Answers (1)
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Date posted: September 19, 2017. Answers (1)
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A accelerates uniformly from it initial velocity, u, the final velocity, v in time t. The distance
traveled during this time is S. If the acceleration is denoted by the letter, a show that;
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Date posted: September 19, 2017. Answers (1)
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Date posted: September 18, 2017. Answers (1)
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Suggest the function of the capacitor.(Solved)
In some petrol engines where spark plugs are used, a capacitor is connected to the distributor.
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Date posted: September 18, 2017. Answers (1)