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कर्नाटक बोर्ड पी.यू.सी.पीयूसी विज्ञान 2nd PUC Class 12

A passenger in an aeroplane shall ______. - Physics

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प्रश्न

A passenger in an aeroplane shall ______.

पर्याय

  • never see a rainbow.

  • may see a primary and a secondary rainbow as concentric circles.

  • may see a primary and a secondary rainbow as concentric arcs.

  • shall never see a secondary rainbow.

MCQ
रिकाम्या जागा भरा
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उत्तर

A passenger in an aeroplane shall may see a primary and a secondary rainbow as concentric circles.

Explanation:

As aeroplane is at higher altitude, the passenger in an aeroplane may see primary and secondary rainbow-like concentric circles.

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पाठ 9: Ray Optics And Optical Instruments - MCQ I [पृष्ठ ५५]

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एनसीईआरटी एक्झांप्लर Physics [English] Class 12
पाठ 9 Ray Optics And Optical Instruments
MCQ I | Q 9.04 | पृष्ठ ५५

संबंधित प्रश्‍न

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Name the phenomenon responsible for it.


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A concave mirror has a focal length of 20 cm. Find the position or positions of an object for which the image-size is double of the object-size.


A converging mirror M1, a point source S and a diverging mirror M2 are arranged as shown in figure. The source is placed at a distance of 30 cm from M1. The focal length of each of the mirrors is 20 cm. Consider only the images formed by a maximum of two reflections. It is found that one image is formed on the source itself. (a) Find the distance between the two mirrors. (b) Find the location of the image formed by the single reflection from M2.


Locate the image of the point P as seen by the eye in the figure.


A cylindrical vessel, whose diameter and height both are equal to 30 cm, is placed on a horizontal surface and a small particle P is placed in it at a distance of 5.0 cm from the centre. An eye is placed at a position such that the edge of the bottom is just visible (see figure). The particle P is in the plane of drawing. Up to what minimum height should water be poured in the vessel to make the particle P visible?


Light is incident from glass (μ = 1.50) to water (μ = 1.33). Find the range of the angle of deviation for which there are two angles of incidence.


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A container contains water up to a height of 20 cm and there is a point source at the centre of the bottom of the container. A rubber ring of radius r floats centrally on the water. The ceiling of the room is 2.0 m above the water surface. (a) Find the radius of the shadow of the ring formed on the ceiling if r = 15 cm. (b) Find the maximum value of r for which the shadow of the ring is formed on the ceiling. Refractive index of water = 4/3.


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Case study: Mirage in deserts

To a distant observer, the light appears to be coming from somewhere below the ground. The observer naturally assumes that light is being reflected from the ground, say, by a pool of water near the tall object.

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Based on the above facts, answer the following question :

In an optical fibre, if n1 and n2 are the refractive indices of the core and cladding, then which among the following, would be a correct equation? 


Case study: Mirage in deserts 

To a distant observer, the light appears to be coming from somewhere below the ground. The observer naturally assumes that light is being reflected from the ground, say, by a pool of water near the tall object.

Such inverted images of distant tall objects cause an optical illusion to the observer. This phenomenon is called mirage. This type of mirage is especially common in hot deserts.

Based on the above facts, answer the following question:

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  3. light is absorbed in this region.
  4. angle made at the eye by the scattered rays with respect to the incident light of the sun lies between approximately 42° and 50°.

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