Some important questions for class 10th s.s ??
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Q.1 Explain why a ray of light passing through the centre of curvature of concave minor gets reflected along the same path.
Q. 2 What is the important function of presence of ozone in earth’s atmosphere?
Q. 3 Dark reaction of photosynthesis does not need light. Do plants undergo dark reaction at night? Explain.
Q. 4 (a) Which property of carbon leads to formation of large number of compounds? Define it.
(b) What is the functional group in the following molecules?
(i) CH3CH2CH2OH
(ii) CH3COOH
Q.5 Why convex mirror is used in rear view mirrors and not concave mirror?
Q.6 Why magnification is taken negative for real images and positive for virtual images?
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