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
(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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