20 cm3 of h2so4 solution neutralizes 21.55cm3 of naoh solution with c = 0.1m. how many cm3 of water should be added to 980cm3 of acid solution so that the concentration of the solution becomes 0.05m.

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Two parallel beams of light P and Q are incident normally on a prism and the transmitted rays are brought to focus with the help of a convergent lens as shown. If the intensities of the upper and lower beams immediately after transmission from face AC are 4I abd I, respectively, find the resultant intensity at the focus.

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The system of connected flexible cables shown in the figure is supporting 2 loads of 550N and 600N at points B and D. Determine the tensions in various segments of the cable