CBSE Question Paper 2007

SET -1 In a series LCR circuit, the voltages across an inductor, a capacitor and a resisitor are 30 V, 30V and 60 V respectively. What is the phase difference between the applied voltage and the current in the circuit? Ultraviolet radiations of different frequencies f1 and f2 are incident on two photosensitive materials having … Continue reading CBSE Question Paper 2007