The lens equation says that if an object is placed at a distance p from a lens, and an image is formed at a distance q from the lens, then the focal length f satisfies the equation 1/f = 1/p + 1/q. Assume that p = 2.3 ± 0.2 cm and q = 3.1 ± 0.2 cm.
a. Estimate f, and find the uncertainty in the estimate.
b. Which would provide a greater reduction in the uncertainty in f: reducing the uncertainty in p to 0.1 cm or reducing the uncertainty in q to 0.1 cm?
You might also like to view...
Answer the following statement(s) true (T) or false (F)
1. Some of the controls on an oil-fired heating system are basically the same as the controls on a gas-fired system. 2. The primary control controls the major operation of an oil-fired heating system. 3. A gun-type oil furnace is ignited by an electric arc. 4. The CAD cell changes its resistance in accordance with the amount of light to which it is exposed. 5. When the CAD cell is in darkness, its resistance will decrease to about 50 ohms.
Current equals ____.
A. voltage times resistance B. voltage divided by resistance C. resistance divided by voltage D. resistance plus voltage
Primary tillage is conducted at a lower depth than secondary tillage
Indicate whether the statement is true or false
What is the purpose of a gauge manifold valve?
A) To control refrigerant flow to the gauge's center B) To allow for a permanent opening for refrigerant flow C) To cut off refrigerant flow from the center of the gauge D) To limit the flow of refrigerant to the outside of the valve