A camera has a converging lens with a focal length of 56 mm. If the f-number is 2.8 what is the diameter of the lens (in mm)? a. 10 b. 31 c. 0.50 d. 20 e. 50
Q: A person with limited accommodation is prescribed lenses of power -2.00 diopters for distant vision.…
A:
Q: An object is beyond the focal point of a converging lens. If you want to bring its image closer to…
A:
Q: A person's near point is 55 cm. What is the minimum power lens that would enable the person to see…
A:
Q: What is the speed of light in the lens of the eye? A) 1.50 x 108m/s B) 2.14 x 108m/s C) 3.00 x…
A: Step 1: Step 2:
Q: - Fill in the missing values in the following table. f a. 6.0 cm b. 2.9 cm P Converging lens ? ? 9…
A: Since you posted several questions, we will solve only first question and for the solutions of other…
Q: A slide projector needs to create a 98-cm-high image of a 2.0-cm-tall slide. The screen is 300 cm…
A:
Q: An object is 1.40-cm-tall. It is placed a distance of 19.2 cm in front of a thin converging lens…
A: Lens Formula The focal length of a lens f, the object distance u and the image distance v for any…
Q: In an optical imaging system, which of following two planes are conjugate planes with magnification…
A: The principal planes are the planes in which the object produces its image of the same size. The…
Q: A young girl with myopia has a far point of 2.0 m. What power of lens is required to correct her…
A: For a myopic eye that far point is given to be d=2 m. Since a myopia eye has a problem in seeing far…
Q: of an object can be seen if the observer stands behind the object and looks toward a lens in the…
A: Option c)
Q: A girl with hyperopia has an abnormal near point of 60.0 cm. Assuming that the normal near point for…
A:
Q: A microscope has a tube length of 11 cm. The objective lens is 3x. What is the focal length of the…
A: In the following problem, given data : Length of the tube, L=11 cm Lateral magnification, m=3
Q: A camera lens used for taking close-up photographs has a focal length of 24.9 mm. The farthest it…
A: focal length (f)=24.9mm farthest placed from the film=33.4mm
Q: A lens forms a real image that is 224 cm away from the object and 1 2/3 times its length. A)What…
A:
Q: A slide projector has a converging lens whose focal length is 105 mm. How far from the lens must the…
A:
Q: 5) An object is 55 cm from a converging lens and a real image is formed on the other side of the…
A: Position of object u=-55cm position of image v=90cm
Q: 2. In a cinema, a picture 2.5 cm wide on the film is projected to an image 3.0m wide on a screen…
A:
Q: An object is placed 12 cm from a converging lens whose focal length is 4 cm. How far away is the…
A: Given, Converging lens of, Object distance, u=12cm Focal length, f=4cm
Q: or
A: Distance of far point from eye = -80cm
Q: illuminated object is located to the left of a lens that is thinner in the center than at the edges.…
A: Since lens is thinner in the center so it must be concave lens .
Q: QUESTION 5 A teenage with hyperopia has an abnormal near point of 1.0 m. What power of corrective…
A:
Q: measurement indicates that a patient cannot clearly see any object that lies closer than 60.2 cm to…
A:
Q: A teenage with hyperopia has an abnormal near point of 1.0 m. What power of corrective lens is…
A:
Q: With a lens, an image is formed as a result of? a. Reflection b. Refraction c. Diffraction
A: With a lens, an image is formed as a result of? a. Reflection b. Refraction c. Diffraction
Q: A convex lens is held over a piece of paper outdoors on a sunny day. When the paper is held 22 cm…
A:
Q: w9-9 A converging lens has a focal length of 8.00 cm. What is the nature of the image formed when…
A:
Q: A 5.0-mm focal-length objective lens and 60-mm focal-length eyepiece in a simple microscope are…
A:
Q: An object is 50 cm to the left of a +20 cm focal length lens. Where does the image form? O a. 20 cm…
A:
Q: Rank the following people from the most nearsighted to the most farsighted, indicating any ties:A.…
A: The power and focal length of a lens are related as
Q: What is the power of a lens with 16cm focal length? A. 1.50D B. 2.00D C. 2.50D D. 3.00D
A: Given value--- focal length = 16 cm. We have to find--- power of lense ?
Trending now
This is a popular solution!
Step by step
Solved in 2 steps
- This question and the next question are based on the following information. A candle flame is 2 cm tall and is placed +30 cm from a converging lens. the image is at +45 cm. What is the focal length of the lens? a. -90 cm b. 18 cm c. 90 cm d. -18 cmA boy with myopia has an abnormal far point of 80.0 cm. What power of corrective lens is needed to accurately adjust his vision? Neglect the distance between the eye and the corrective lens. a. -2.00 D b. -1.25 D C. -1.75 D d. -1.50 D e. -2.25 DThe angular magnification of a refracting telescope is 14. If the focal length of the objective lens is 70 cm, what is the distance between the object lens and the eyepiece? a. 95 cm b. 75 cm c. 90 cm d. 85 cm e. 80 cm
- A shorter focal length will increase the power of which of the following? I. lens II. mirror A. Both I and II B. II only C. Neither I or II D. I onlyAn eyeglass prescription that specifies a power of -1.0 diopters is describing a lens that has a focal length of O a. + 1 meter O b.- 100 cm O C. - 1 meter O d. - 1 cm An object placed 25 cm to the left of a +20 cm focal length lens produces a real image 100 cm to the right of the lens. What is the magnification? O a. - 4 Ob. - 0.25 O C. + 2 O d. - 1Which of the following is not a problem for refracting telescopes? O A. Different wavelengths of light are focused at slightly different locations. O B. The quality of the glass lens in transparency and in the shape of both surfaces must be high. C. The secondary mirror blocks some of the light passing through the primary lens. D. The primary lens can only be supported at the edges making deformation of large lenses difficult to avoid.
- 4. An object is 2 meters from a thin lens with a focal length of 50 cm. Apply the thin-lens equation to calculate the image distance from the lens and magnification.w9-8 A diverging lens has a focal length of −8.00 cm. What is the nature of the image formed when the object is placed at a distance of 24.2 cm from the lens? a. virtual, upright, and diminished b. real, inverted, and diminished c. virtual, upright, and enlarged d. real, inverted, and enlargedThe focal length of a lens a. Approaches zero as the index of refraction increases b. Does not depend on the index of refraction O c. Increases as the index of refraction increases d. Decreases as the index of refraction increases
- 5. A diverging lens has a focal length that has a magnitude of 32.0 cm. An object is placed 21.0 cm in front of this lens. Calculate the magnification.apart. Which one of the following is a characteristic of a compound microscope? a. The objective is a diverging lens. b. The eyepiece is a diverging lens. The final image is real C. d. The image formed by the objective is virtual. e. The image formed by the objective is real.3. In order to see an upright and magnified virtual image using a converging (positive) lens with a focal length of f, the object distance (d) must be: A. 0SEE MORE QUESTIONS