To double the resolving power of a telescope, you must ________.
A. decrease the diameter by half
B. increase the collecting area by a factor of two
C. increase the diameter by a factor of two
D. decrease the collecting area by half
Answer: C
You might also like to view...
A proton is accelerated from rest through a potential difference of 150 V. It then enters a region of uniform magnetic field and moves in a circular path (radius = 12 cm). What is the magnitude of the magnetic field in this region?
a. 18 mT b. 12 mT c. 15 mT d. 22 mT e. 10 mT
____________________ is the resistance of a gas to the flow of radiation
Fill in the blank(s) with correct word
A single slit forms a diffraction pattern, with the first minimum at an angle of 40.0° from central maximum, when monochromatic light of 630-nm wavelength is used
The same slit, illuminated by a new monochromatic light source, produces a diffraction pattern with the second minimum at a 60.0° angle from the central maximum. What is the wavelength of this new light? A) 425 nm B) 475 nm C) 450 nm D) 500 nm E) 525 nm
Determine Qnet for the toasting bread in problem 7.9, if the surroundings act as a gray surface with emissivity of 0.45 and temperature of 85ºC.
