Assuming a pupil diameter of 3. mm, what is the angular resolution of the human eye at the middle of the visible spectrum (550. nm)?
A) 0.8 degree
B) 0.8 arc-minute
C) 0.2 degree
D) 0.2 arc-minute
E) 2. milliradian
B
You might also like to view...
Equilibrium: If an object remains at rest, then the sum of both the external torques and the external forces on the object must be zero.
A. True B. False
Parallel-Plate Capacitor: An ideal parallel-plate capacitor consists of two parallel plates of area A separated by a distance d. This capacitor is connected across a battery that maintains a constant potential difference between the plates. If the separation between the plates is now doubled, the magnitude of the charge on the plates will
A. double. B. quadruple. C. be cut in half. D. be cut in fourth. E. not change.
What is the common trait of all main-sequence stars?
A) They generate energy through hydrogen fusion in their core. B) They are in the final stage of their lives. C) They are all spectral type G. D) They all have approximately the same mass.
We can measure the parallax of most stars in our galaxy
Indicate whether the statement is true or false