Please help 1) The two lenses lie at the same optic axis. An object of 10.0 cm h
ID: 1598898 • Letter: P
Question
Please help
1) The two lenses lie at the same optic axis. An object of 10.0 cm high is placed to the left of a lens with focal length of 8.cm. A second lens of focal length 8.0 cm is placed 40 cm to the right of the first lens.
A.The position of the final image produced by the two lenses combined
B. 43 cm
a)A is greater
b)B is greater
c) A and B are equal
d)Cannot determine from the given
2).A red light (664-nm) is used in a double-slit experiment with slit width 0.8-mm each. The screen is located a distance 2.75-m from the slits.
A. 0.0456 m
B. The distance on the screen between the central bright fringe and the third-order bright fringe.
a)A is greater
b)B is greater
c) A and B are equal
d)Cannot determine from the given
3) A current carrying wire of length 1-m is suspended in a 0.5 T magnetic field. The wire is parallel with the magnetic field.
A. Magnetic force on the wire
B. -0.5 N
a)A is greater
b)B is greater
c) A and B are equal
d)Cannot determine from the given
Explanation / Answer
1) d)Cannot determine from the given
2) b)B is greater
3) c) A and B are equal
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