3. A farsighted person with near point 1,7 m wants to clearly see an object 25cm away. (Assume the lens is held 2 cm away from the eye.) a) What power of spectacle lens is needed? b) What type of lens is this?

Q: Why is light behaving important? Give some applications.

A: Importance of dual behavior of light:     ;

Q: VB1 R1 ww 13 R5 R3 w VB2 ww R2 w R4 In the circuit above, the current through R5 (labeled as 13) is…

A: Step 1:Step 2:  Step 3: final answers

Q: Light needs a medium to be transported from source to destination.       True   Or   False

A: Wave is classified into two types. mechanical wave  nonmechanical wave mechanical wave requires…

Q: Optical fiber works on the principle of   A) Scattering B) interference C) total internal reflection…

A: Using Total internal reflection, Optical fiber is working.

Q: The wave theory of light could not explain the law of reflection magnification of a lens O…

A: Correct option –Photoelectric effect   Photoelectric effect, the phenomenon in which electrically…

Q: Why do some objects only diffract around certain obstacles?

A: The phenomenon of diffraction is the bending of light around small (smaller than the wavelength of…

Q: Why does different material have different index of refraction?

A: Different material possess different refractive indices because of each material will have different…

Q: Examine the picture of tree leaves below: Which description best explains the distortion of color…

A: Dispersion of light: It is defined as the splitting of white light into its constituent colours.…

Q: Solve for the speed of light in each of the following materials:   Air Glass Water

A: The speed of light is given as c=3×108 m/s

Q: How is the law of reflection and refraction applied in health science?

A:

Q: Optical fibers (fiber optic cameras) work because of   A Interference   B diffraction   C…

A: Given:-                     Optical fibers (fiber optic cameras) work because of   A…

Q: velocity). Use the accompanying table of indices of refraction to order them. Medium n Benzene 1.501…

A: Solution: Given: c = speed of light = 2.998 x 108 m/s nBenzene = refractive index of Benzene = 1.501…

Q: Experimental value = 1.50 Which index of refraction is suitable to be the theoretical value?

A: Given: Experimental value = 1.50 Find: Suitable theoretical value  Solution: We will calculate the…

Q: In which of the following medium the speed of light is maximum? Air Water Oil Alcohol

A: Speed of light in medium is given by, v=cn, n is refractive index of medium

Q: At what angle will light traveling in the air be completely polarized horizontally when reflected…

A:

Q: You see colors with a prism because  Polarization Dispersion  Diffraction  Interference…

A: Prism is an optical object which refracts the light passing through it. When a white light passes…

Q: The bending of light as it travels from one medium to another is called:

A: Solution: Step1 - Here we will understand the concept that will be used to solve the question. As we…

Q: What are the evidences to support that light is a wave?

A:

Q: Light travels faster in    options:   dense air.   same in each.   vacuum   thin air.

A: Answer - Light travels faster in vacuum

Q: How could a converging lens be made for sound waves?

A: These types of lens should be made from a non-solid material like gas, allowing things to be…

Q: Why  is the lens on a good –quality camera coated  with a thin film?

A:

Q: A blank is a graphic image composed of two images, one that is tinted red and the other that is…

A:

Q: In what ways does the diffraction of light influence the resolution of optical microscopes?

A: Ways through which diffraction of light influence the resolution of optical microscope.

Q: A beam of light travels from diamond (n 2.4 ) to glass at a 28° angle to the normal of the…

A:

Q: The light intensity, ?0, decreases by a factor of _______ as the distance from the light source four

A: The new distance is 4 times the original distance.       Mic test…

Q: Does refraction make a swimming pool seem deeper or shallower? Explain

A: yes refraction make a swimming pool seem deeper or shallower.

Q: What are some of the properties displayed by light rays reflection and interference refraction and…

A: Properties of light are: 1.Refraction of light2.Reflection of light3.Dispersion of…

Q: Why does light bend when it passes thru different materials?

A: According to question: Light bends only in a medium, i.e light bends as a consequence of interacting…

Q: Which of the following wave phenomena can explain how we see images when wearing glasses, using a…

A: When the rays of light passes from one transparent medium to another, the path of the rays is…

Q: 36) An oil spill produces a rainbow of colors because: As the temperature of the oil increases, the…

A: Given: An oil spill produces a rainbow of colors. To find: Reason of rainbow colors from oil spill

Q: A glass prism produces dispersion, but a rectangular glass does not. How?

A: Dispersion is the phenomenon by which white light is divided into different colors after falling on…