Physics question and answers for October 31, 2023
- Q A 5 00 cm tall object is placed 4 25 cm from a lens and produces an image that is 3 00 cm behind the lens What is the height...
- Q A 3 25 cm tall object is placed 7 20 cm from a converging lens An image is produced that is 12 5 cm in front of the lens A...
- Q An object is placed 21 3 cm from a convex lens An image is produced at 27 5 cm What is the focal length in cm of the lens 1...
- Q A person with a digital camera uses a lens of focallength 25.0 mm to take a photograph of a 1.24-cm-tall seedling located 12.0 cm from the camera.Part AHow far is...
- Q A thin lens with a focal length of 6.50 cm is used asa simple magnifier.For related problem-solving tips and strategies, youmay want to view a Video Tutor Solution of A...
- Q An object is placed at a distance of 50 cm from a plane and a concave mirror with f=40 cm. Therefore the conclusion we can make on the images formed...
- Q 9. Coulomb force between the nucleus (with atomic number Z) and an electron at an orbit of radius r = Ze/r10. Assuming the nucleus being at rest, total energy of...
- Q If the magnification of an image formed by a concave mirror is negative, the image must beA. invertedB. realC. any of the choices mentioned hereD. formed away from the focus
- Q A monochromatic light source emits a wavelength of 500 nm in air. When passing through a liquid, the wavelength reduces to 474 nm. What is the liquid's refractiveindex?A. 1.60B. 1.05C....
- Q Calculate the recessional velocity in m/s of a light wave with a red-shift (??/?0) of .02. Assume the speed of light (c) to be 3x10^8 m/s.
- Q A delicious looking Popeye's biscuit is placed 3 cm from a DIVERGING lerip which forms an image at 5 cm. Calculate the focal length of the lens.
- Q An image formed by a concave mirror is mostly (except for cases when the object is placed too closed to the mirror)real and straight / erectvirtual and straightvirtual and invertedreal...
- Q Light of wavelength 710 nm in vacuum passes through a piece of quartz of refractive index of 1.458.(a) Find the speed of light in quartz.(b) What is the wavelength of...
- Q A 1.74 m tall person stands in front of a mirror and sees only the upper half of his body image formed by the mirror. What is the height of...
- Q A block of cubic zirconia is placed in water. A laser beam is passed from the water through the cubic zirconia. The angle of incidence is 50, and the angle...
- Q If the object distance for a converging thin lens is more than twice the focal length of the lens, the image is1. virtual and erect.2. larger than the object.3. located...
- Q A physics student places an object 6.0 cmfrom a converging lens of focal length 9.0 cm.What is the magnitude of the magnificationof the image produced?1. |M| = 3.02. |M| =...
- Q A 16 cm high object is in front of a thinlens. The object distance is 3 cm and theimage distance is -8 cm. The image heightis:? 1. -6 cm2.-42.6667 cm3.-21.3333...
- Q Magnifying mirrors are usually concave because concave mirrorsa) form a virtual image that is in front of the mirrorb) form a virtual image that is larger than the actual objectc)...
- Q An object is 30 cm in front of a converging lens of focal length 10 cm. The image is:1.virtual and the same size than the object.2.real and smaller than the...
- Q If light moves through a particular material at 1.5x108 m/s, what is the material's refractive index (n)?Use the equation in your notes.Round your answer to the nearest 0.01.
- Q The process by which the lens adjusts its shape to focus images at various distances on the retina is calledA. accommodationB. feature detectionC. adaptationD. shape detection
- Q When people usually think about telescopes, they think about visually looking at distant objects with their eyes. But, not all telescopes use the visible portion of the electromagnetic spectrum. Some...
- Q A convex lens 'L' and a plane mirror 'M' are arranged as shown in figure below. Position of object pin 'O' is adjusted in such a way that the inverted...
- Q A 2.7-cm-tall object is 100 cm in front of a diverging lens that has a 51 cm focal length. Use ray tracing to find the position and height of the...
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