What Diopter takes an object at 47. cm and forms an upright image 23. cm from the lens?
A) +2.2 D
B) -0.022 D
C) -2.2 D
D) 2.2 × 102 D
E) +0.022 D
C
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The tires of a car support the weight of a stationary car. If one tire has a slow leak, the air pressure within the tire will _______ with time, the surface area between the tire and the road will ________ in time, and the net force the tire exerts
on the road will ___________ in time. A) decrease, increase, remain constant B) decrease, increase, decrease C) decrease, decrease, decrease D) increase, increase, increase E) decrease, increase, increase
Compound Microscope: A compound microscope has an objective with a focal length of 3.00 mm and an eyepiece of focal length 6.00 cm. It is adjusted for minimum eyestrain for persons with a near point of 25 cm. If the two lenses are separated by 40.0 cm, what is the total overall magnification?
A. 28 B. 56 C. 470 D. 550 E. 2200
R-09 insulation provides more resistance to the flow of heat than R-12 insulation
What will be an ideal response?
Thin Lenses: A convex lens has focal length f. If an object is placed at a distance of 2f from the lens on the principal axis, the image is located at a distance from the lens
A. of 2f. B. between f and 2f. C. of f. D. between the lens and f. E. of infinity.