JEE MainPhysicsGeometrical OpticsMCQ+4 / −1
An initially parallel cylindrical beam travels in a medium of refractive index where and are positive constants and is the intensity of the light beam. The intensity of the beam is decreasing with increasing radius. As the beam enters the medium, it will
- Adiverge
- Bconverge
- Cdiverge near the axis and converge near the periphery
- Dtravel as a cylindrical beam
More from Geometrical Optics
- A transparent solid cylindrical rod has a refractive index of It is surrounded by air. A light ray is incident at the mid-point of one end of the rod as shown in the figure. The incident angle for which the… Includes diagram2009 · MCQ
- In an optics experiment, with the position of the object fixed, a student varies the position of a convex lens and for each position, the screen is adjusted to get a clear image of the object. A graph between the object distance and…2009 · MCQ
- A student measures the focal length of a convex lens by putting an object pin at a distance from the lens and measuring the distance of the image pin. The graph between and plotted by the student should look like2008 · MCQ
- Two lenses of power and are in contact with each other. The focal length of the combination is2007 · MCQ
- The refractive index of a glass is for red light and for blue light. Let and be angles of minimum deviation for red and blue light respectively in a prism of this glass. Then,2006 · MCQ
- A fish looking up through the water sees the outside world contained in a circular horizon. If the refractive index of water is and the fish is below the surface, the radius of this circle in is2005 · MCQ
- A thin glass (refractive index ) lens has optical power of in air. Its optical power in a liquid medium with refractive index will be2005 · MCQ
- A plano convex lens of refractive index and radius of curvature . Is silvered at the curved surface. Now this lens has been used to form the image of an object. At what distance from this lens an object be placed in order to…2004 · MCQ