A double-convex lens is formed from a piece of plastic with an index of refraction of 1.70. The radius of the front surface has magnitude 20 cm, and the radius of the back surface has magnitude 30 cm. What is the focal length of this lens?
A) 86 cm B) -86 cm C) 43 cm D) -17 cm E) 17 cm
E
Physics & Space Science
You might also like to view...
State the Principle of Equivalence
What will be an ideal response?
Physics & Space Science
Two small electrically charged objects are placed 12 centimeters (cm) apart, where they exert a force of 2 N on each other. How far apart must they be placed in order to exert at force of 8 N on each other?
A) 24 cm B) 3 cm C) 6 cm D) 9 cm E) 48 cm
Physics & Space Science
Nuclear fusion creates
A) radiant energy. B) thermal energy. C) both thermal and radiant energy. D) nuclear energy. E) all types of energy.
Physics & Space Science
A ray of light strikes a thick sheet of glass (n = 1.5) at an angle of 46° with the normal. Find the angle of the refracted ray within the glass with respect to the normal
a. 25° c. 29° b. 56° d. 16°
Physics & Space Science