A prism ABC (with BC as base) is placed in different orientations.A narrow beam of white light is incident on the prism as shown inFigure 11.1. In which of the following cases, after dispersion, thethird colour from the top corresponds to the colour of the sky?The Human Eye andthe Colourful World11CHAPTERFig.11.1(a) (i)(b) (ii)(c) (iii)(d) (iv)

When white light passes through the achromatic combination of prisms, then what is observed

The splitting of white light into different colours on passing through a prism is called

The clear sky appears as blue due to Only one correct answerA.Reflection of lightB.Atmospheric refractionC.Scattering of lightD.Absorption of light

When white light is shone on a glass prism, it is dispersed to form the spectrum of colours. Given the speed for red light in glass is faster than speed of violet light in glass, infer which row shows the correct colours at X and Y?   X YA red violetB violet red

ss Tracker. Score an amber for most questions correct, or a green for all correct.1A student uses a triangular glass prism to separate a beam of white light into the colours of the visible spectrum.  She observes the spectrum produced on a screen which has been placed on the far side of the prism.  Which of the colours is refracted by the smallest amount?YellowRedVioletGreen2Convert one nanometre (1 nm) to metres.10-3 m10-12 m10-6 m10-9 m3What name is given to the type of reflection which occurs when light is incident onto a smooth, polished surface (such as a mirror)?Special reflectionStandard reflectionSpecular reflectionSmooth reflection4Which of the following does NOT occur during diffuse reflection?Parallel rays of light which strike the surface are reflected at random anglesLight is incident onto a rough surfaceThe Law of Reflection is not obeyedAn image is not formed5What colour will a green pear appear to be when viewed through a blue colour filter?  The pear is being illuminated by white light.YellowBlackGreenBlue6Why does a sheet of yellow paper appear yellow when illuminated with white light?It reflects the other colours in the visible spectrum effectivelyIt transmits the other colours in the visible spectrum effectivelyIt absorbs yellow light effectivelyIt reflects yellow light effectively