Created by StemPy LabA person cannot see clearly any object closer than to the eye. To read a book held at , the person needs spectacles. Treat the spectacle lens as thin and close to the eye. The power of the lens needed is
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← In a series LCR circuit connected to an AC supply, the rms voltages measured across the resistor, the inductor and the capacitor are 40 V, 90 V and 60 V respectively. The rms voltage of the supply and the power factor of the circuit areIn a Young's double-slit experiment done in air, the fringe width is 0.60 mm. The whole apparatus is now placed under water, of refractive index 4/3, with nothing else changed. In the water, the fringe width and the distance of the third bright fringe from the central bright fringe are →
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