Thin Lenses: An object is placed 9.5 cm in front of a convex lens with a focal length of magnitude 24 cm.(a) Where is the image formed and how far is it from the lens?(b) What is the magnification produced by the lens?
What will be an ideal response?
(a) 16 cm in front of the lens (b) 1.7
You might also like to view...
Which of the following physics quantity measures how fast an object is moving?
A 500-eV electron and a 300-eV electron trapped in a uniform magnetic field move in circular paths in a plane perpendicular to the magnetic field. What is the ratio of the radii of their orbits?
A. 2.8 B. 1.7 C. 1.3 D. 4.0 E. 1.0
How does the rate of hydrogen consumption of a main-sequence B star compare to the hydrogen consumption of the sun?
A) A B star consumes hydrogen at a rate about 107 to 108 times faster than the sun. B) A B star consumes hydrogen at a rate about 103 to 104 times faster than the sun. C) A B star consumes hydrogen at a rate about 6 to 10 times faster than the sun. D) This cannot be answered using the HR diagram.
The primary coil of an ideal transformer has 100 turns and its secondary coil has 400 turns. If the ac current in the secondary coil is 2 A, what is the current in its primary coil?
A) 2 A B) 8 A C) 1/2 A D) 1/4 A E) 4 A