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Home/class 10 cbse sample paper 2024 science

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Sonal Chauhan
Sonal Chauhan
Asked: December 28, 2023In: Class 10 Science

Marked decline in the thickness of ozone layer was noticed in the 1980s. Which human activity can be held accountable for this change? What is the possible effect of this on human health?

Ozone layer depletion is the thinning of the ozone layer in Earth’s stratosphere, primarily caused by human-made substances like chlorofluorocarbons (CFCs). This leads to increased UV radiation, harming ecosystems and health.

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Rajshree Chatterjee
Rajshree Chatterjee
Asked: December 28, 2023In: Class 10 Science

Rupal suffers from myopia. Where would the image form in her eye? Name the type of lens that is generally used to correct myopia. (c) Rupal underwent cataract surgery and her eye lens was replaced with an artificial lens with a fixed focal length, made of a plastic material, silicone. State one likely visual disadvantage that Rupal is likely to experience as compared to a person who has normal eyesight.

Myopia, or nearsightedness, is a vision condition where distant objects appear blurry due to the elongation of the eyeball. Corrective lenses or surgery can help manage myopia. Regular eye exams are essential.

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