The resistance of a conductor depends on its length (l), area of cross-section (A), nature of material, and temperature. It increases with length, decreases with thickness, and varies with the type and temperature of the material. cbse class 10 previous year ...
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It is wrong to say that plants do not produce excretory products. Plants excrete wastes differently from animals. Oxygen is released through stomata, excess water by transpiration, and other wastes are stored in dead cells, gums, resins, vacuoles, or removed ...
i) 12 Ω lamps (only) on. (a) 4 Ω lamps (only) on (ii) 12 V for both sets of lamps and all of them are in parallel. (iii) 12 Ω lamps are on when the wire is connected to position 2. class 10 science ...
The correct option is (c) lack of oxygen and formation of lactic acid. During heavy exercise, muscles may not get enough oxygen. Then, glucose breaks down anaerobically to form lactic acid. The accumulation of lactic acid causes muscle cramps and ...
From the ray diagram, the image formed is real, inverted, and diminished because the object is placed beyond 2F₁ of a convex lens. class 10 science board exam paper 2026 sample paper for class 10 science board exam 2026