Std 9 Physics Kerala Syllabus

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Std 9 Physics Kerala Syllabus. We covered all the Std 9 Physics Kerala Syllabus MCQs in this post for free so that you can practice well for the exam.

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Std 9 Physics Kerala Syllabus Objective for Students

Tyndall effect is related to the ……… of light.

(a) scattering

(b) refraction

(c) dispersion

(d) reflection

Option a – scattering

In the absence of the Earth’s atmosphere, the sky would appear

(a) blue

(b) deep red

(c) white

(d) black

Option d – black

‘Red’ is used as a danger signal because

(a) blood is red.

(b) red light is scattered least by the air molecules.

(c) red color is easily available.

(d) red color is soothing for the eye.

Option b – red light is scattered least by the air molecules

When the sun is near the horizon during the morning or evening, it appears reddish. The phenomenon responsible for this observation is

(a) reflection of light

(b) refraction of light

(c) dispersion of light

(d) scattering of light

Option d – scattering of light

Soap solution used for cleaning purposes appears cloudy. This is due to the fact that soap micelles can

(a) refract light

(b) scatter light

(c) diffract light

(d) polarize light

Option b – scatter light

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