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Question 1 of 10
1. Question
Select the following statement that best describes the difference between concave and convex mirrors.
Correct
Concave mirrors have positive focal length form a varying image, size and orientation. whereas convex mirrors have negative focal length and can only form small and upright images.
Incorrect
Concave mirrors have positive focal length form a varying image, size and orientation. whereas convex mirrors have negative focal length and can only form small and upright images.
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Question 2 of 10
2. Question
Which of the following statement best describes convex lenses?
Correct
Convex lenses are converging and always have positive focal length. It can form various images.
Incorrect
Convex lenses are converging and always have positive focal length. It can form various images.
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Question 3 of 10
3. Question
Select the following statement that states fact about concave and convex mirrors.
Correct
Concave lenses always have a negative focal length and can only form a small and upright image whereas convex lenses always have a positive focal length and can produce various images with different shape, size, and orientation.
Incorrect
Concave lenses always have a negative focal length and can only form a small and upright image whereas convex lenses always have a positive focal length and can produce various images with different shape, size, and orientation.
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Question 4 of 10
4. Question
Which of the following statements best describes the importance of understanding the atomic structure?
Correct
Understanding atoms and atomic structure play a vital role in understanding x-ray and imaging production, radiation dose, and other fundamental principles of medical imaging.
Incorrect
Understanding atoms and atomic structure play a vital role in understanding x-ray and imaging production, radiation dose, and other fundamental principles of medical imaging.
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Question 5 of 10
5. Question
Select the best statement explaining the nature of electricity.
Correct
The nature of an object’s atoms is responsible for its electric property. It varies depending on the electric property of a material.
Incorrect
The nature of an object’s atoms is responsible for its electric property. It varies depending on the electric property of a material.
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Question 6 of 10
6. Question
Which of the following statement explains the difference of conductors and insulators?
Correct
Conductors consist of loose valence electrons because electrons are in the outermost shell while insulators consist of tightly bound because of protons being tightly bound at the nucleus.
Incorrect
Conductors consist of loose valence electrons because electrons are in the outermost shell while insulators consist of tightly bound because of protons being tightly bound at the nucleus.
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Question 7 of 10
7. Question
Select the statement that best describes Coulumb’s law.
Correct
It states that the least positive charged unit rest with protons and the least negative charged unit rests with electrons. Similar charges repel each other and the opposite charges will attract.
Incorrect
It states that the least positive charged unit rest with protons and the least negative charged unit rests with electrons. Similar charges repel each other and the opposite charges will attract.
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Question 8 of 10
8. Question
Select in the following statements that best describe electric fields.
Correct
An electric field exists around charged objects. It is generated by the charged object and refers to the change in space around the charged object.
Incorrect
An electric field exists around charged objects. It is generated by the charged object and refers to the change in space around the charged object.
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Question 9 of 10
9. Question
Which of the following statement about electric fields is correct?
Correct
A positive test charge is used o test the nature of an electric field. If the field is created by a negative charge, the test will result in an attractive force. If positively charged, a repulsive force is the result.
Incorrect
A positive test charge is used o test the nature of an electric field. If the field is created by a negative charge, the test will result in an attractive force. If positively charged, a repulsive force is the result.
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Question 10 of 10
10. Question
Which of the following statement about the electric circuit is true?
Correct
An electric circuit allows the continuous flow of electric charges through a series of electronic devices connected to a conductor.
Incorrect
An electric circuit allows the continuous flow of electric charges through a series of electronic devices connected to a conductor.