What is another name for a convex lens?A concave lensA converging lensA diverging lensA negative lens2What will happen to parallel rays of light which strike a convex lens?They will converge upon exiting the lensThey will still be parallel upon exiting the lensThey will diverge upon exiting the lensIt is impossible to say without knowing the exact shape of the lens3What will happen to parallel rays of light which strike a concave lens?They will diverge upon exiting the lensThey will converge upon exiting the lensThey will still be parallel upon exiting the lensIt is impossible to say without knowing the exact shape of the lens4A convex lens has a focal length of 30 cm. In which of the following cases will a real image NOT be produced?When an object is placed 80 cm from the lensWhen an object is placed 60 cm from the lensWhen an object is placed 20 cm from the lensWhen an object is placed 40 cm from the lens5The focal length of a convex lens is 10 cm. An object is placed 15 cm from the lens. Which of the following describes the image which will be produced of this object?Real, inverted and diminishedReal, inverted and magnifiedVirtual, inverted and diminishedVirtual, upright and magnified6Lenses work as a result of which of the following processes?ReflectionRarefactionReflationRefraction
Question
What is another name for a convex lens?A concave lensA converging lensA diverging lensA negative lens2What will happen to parallel rays of light which strike a convex lens?They will converge upon exiting the lensThey will still be parallel upon exiting the lensThey will diverge upon exiting the lensIt is impossible to say without knowing the exact shape of the lens3What will happen to parallel rays of light which strike a concave lens?They will diverge upon exiting the lensThey will converge upon exiting the lensThey will still be parallel upon exiting the lensIt is impossible to say without knowing the exact shape of the lens4A convex lens has a focal length of 30 cm. In which of the following cases will a real image NOT be produced?When an object is placed 80 cm from the lensWhen an object is placed 60 cm from the lensWhen an object is placed 20 cm from the lensWhen an object is placed 40 cm from the lens5The focal length of a convex lens is 10 cm. An object is placed 15 cm from the lens. Which of the following describes the image which will be produced of this object?Real, inverted and diminishedReal, inverted and magnifiedVirtual, inverted and diminishedVirtual, upright and magnified6Lenses work as a result of which of the following processes?ReflectionRarefactionReflationRefraction
Solution
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Another name for a convex lens is a converging lens.
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Parallel rays of light that strike a convex lens will converge upon exiting the lens.
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Parallel rays of light that strike a concave lens will diverge upon exiting the lens.
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A real image will not be produced when an object is placed 20 cm from a convex lens with a focal length of 30 cm.
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If the focal length of a convex lens is 10 cm and an object is placed 15 cm from the lens, the image produced will be real, inverted, and magnified.
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Lenses work as a result of the process of refraction.
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