Question 1

Where must an object be placed in front of a concave mirror so that the image and object are the same size (F is the focal point and C is the center of curvature)?

Accepted Answer

A) at F 
B) at C 
C) between F and C 
D) beyond C 
E) between F and the mirror 
A) at F 
B) at C 
C) between F and C 
D) beyond C 
E) between F and the mirror

Question 2

For a concave mirror,when is the object distance equal to the image distance?

Accepted Answer

A) when the magnification is equal to zero 
B) when the radius of curvature is equal to the image distance 
C) when the radius of curvature is equal to half the object distance 
D) when the focal length is zero 
A) when the magnification is equal to zero 
B) when the radius of curvature is equal to the image distance 
C) when the radius of curvature is equal to half the object distance 
D) when the focal length is zero

Question 3

In figure shown,what is the smallest incident angle $\theta$i for the beam to undergo total internal reflection at surface S of prism having an index of refraction of 1.5?

Accepted Answer

A) 56.1S1U1P1$\circ$S1S1P0 
B) 33.9S1U1P1$\circ$S1S1P0 
C) 50.9S1U1P1$\circ$S1S1P0 
D) 39.1S1U1P1$\circ$S1S1P0 
A) 56.1S1U1P1$\circ$S1S1P0 
B) 33.9S1U1P1$\circ$S1S1P0 
C) 50.9S1U1P1$\circ$S1S1P0 
D) 39.1S1U1P1$\circ$S1S1P0

Exam 32: Geometric Optics

Where must an object be placed in front of a concave mirror so that the image and object are the same size (F is the focal point and C is the center of curvature)?

For a concave mirror,when is the object distance equal to the image distance?

In figure shown,what is the smallest incident angle θ\thetaθ i for the beam to undergo total internal reflection at surface S of prism having an index of refraction of 1.5?

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