A man's face is 30 cm in front of a concave spherical shaving mirror. If the image is erect and 1.5 times as large as his face, what is the radius of curvature of the mirror?
A) 40 cm
B) 60 cm
C) 100 cm
D) 140 cm
E) 180 cm
E
Physics & Space Science
You might also like to view...
The electric arc furnace uses ___________% scrap steel.
Fill in the blank(s) with the appropriate word(s).
Physics & Space Science
The open universe would require ?o be less than zero
Indicate whether the statement is true or false
Physics & Space Science
A ray of light, which is traveling in air, is incident on a glass plate at a 45° angle. The angle of refraction in the glass
A) is less than 45°. B) is greater than 45°. C) is equal to 45°. D) could be any of the above; it all depends on the index of refraction of glass.
Physics & Space Science
Two objects of different masses have momentum of equal, non-zero magnitude. Which object has more kinetic energy?
A) the heavier object B) the lighter object C) They both have the same kinetic energy.
Physics & Space Science