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Exam 25: The Refl Ection of Light: Mirrors

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A concave mirror has a radius of curvature of 20 cm. For which one of the following object distances will the image be real, inverted and smaller than the object?

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Question 41

In the figure, Joel is using a device known as a periscope to observe an object, represented by an upright arrow. The periscope contains two plane mirrors tilted at an angle of 45° relative to Joel's line of sight. Which one of the following pairs of characteristics of the final image that Joel looks at is correct relative to those of the object? In the figure, Joel is using a device known as a periscope to observe an object, represented by an upright arrow. The periscope contains two plane mirrors tilted at an angle of 45° relative to Joel's line of sight. Which one of the following pairs of characteristics of the final image that Joel looks at is correct relative to those of the object?

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Question 42

A ray of light is reflected from two plane mirror surfaces as shown in the figure. What are the correct values of α\alpha and β\beta ? A ray of light is reflected from two plane mirror surfaces as shown in the figure. What are the correct values of \alpha and \beta ? A ray of light is reflected from two plane mirror surfaces as shown in the figure. What are the correct values of \alpha and \beta ?

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