A seed is 15 mm in front of a convex lens, and the image of the seed is 4.0 mm behind the lens. What is the focal length of the lens?
A) 11 mm
B) 5.5 mm
C) 3.8 mm
D) 3.2 mm
B
You might also like to view...
Reactance: At what frequency will the capacitive reactance of a 0.010-?F capacitor be 100 ??
A. 1.0 kHz B. 16 kHz C. 0.16 MHz D. 0.31 MHz
Orbital speed is the speed with which a planet moves around the Sun. This speed is determined by:
A) the mass of the planet only. B) the mass of the Sun only. C) both the mass of the planet and the mass of the Sun. D) the mass of the planet and its distance from the Sun. E) the mass of both the planet and the Sun and the distance between the two.
Which of the following worlds have the thinnest lithospheres?
A) Earth and the Moon B) Venus and the Moon C) Mercury and Venus D) Earth and Mars E) Earth and Venus
A steel ball has a mass equal to 5 kilograms. What is the ball's weight?