A camera lens is initially set at f/16 for a shutter speed of 1/30 s. If the amount of lighting on the subject is unchanged, and the lens is set at f/5.6, what is the proper shutter speed at this setting?

a. 1/8 s
c. 1/500 s
b. 1/250 s
d. 1/16 s


B

Physics & Space Science

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A. 1.25 Pa B. 12.5 Pa C. 1.25 kPa D. 12.5 kPa

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The Sun's complete classification is G2V

Indicate whether the statement is true or false

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A 2.0-?F capacitor that is initially uncharged is charged through a 50-k? resistor. How long does it take for the capacitor to reach 90% of its full charge?

A) 0.90 s B) 2.2 s C) 0.23 s D) 2.3 s

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A long solenoid (n = 80 turns/cm) carries a current of 70 mA. Determine the magnitude of the magnetic field inside the solenoid.

What will be an ideal response?

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