The process of changing the shape of the lens, and hence adjusting its focal length, is referred as accommodation
Indicate whether the statement is true or false
TRUE
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Diffraction Gratings: Consider an experiment using a diffraction grating with 7000 lines/cm, a screen 2.50 m away, and a 440-nm wavelength beam of light.(a) How many side maxima will be observed on one side of the central maximum?(b) How far apart on the screen are the first-order and second-order maxima on the same side of the central maximum?
What will be an ideal response?
Which properties of spiral galaxies allow us to subclassify them as Sa, Sb, or Sc?
A) orientation B) size of the disk C) shape of the halo D) size of bulge and extent of spiral arms E) color of stars in the disk
During what month will the full moon achieve its maximum altitude, as observed from Wash ington, D.C. (39°N)? When will it have its minimum altitude?
A straight wire carries a 12-A current eastward and a second straight wire carries a 14-A current westward. The wires are separated by a distance of 42 cm. The force on a 6.4 m length of one of the wires is
A) 8.0 × 10-7 N. B) 5.1 × 10-4 N. C) 8.0 × 10-5 N. D) 5.1 × 10-6 N. E) not possible to determine with the information given.