7. The effective current I in the given circuit at very high frequencies will be 80 20 mH 6F 42 50 mH 80 A. 0.5F 0.5F www. www 0.5 F 12 0.8F 402 0.8F 202 220 V 8. The graph between and for a thin convex lens in order to determine its focal length is plotted as shown in the figure. The refractive index of lens is 1.5 and its both the surfaces have same radius of curvature R. The value of R will be sha (where u = object distance, v = image distance) _cm. + (cm) 0.10 0.08 0.06 0.04 0.02 B. -0.10-0.08 -0.06 -0.04-0.02 10 (cm) 9. In the hydrogen spectrum, be the wavelength of first transition line of Lyman series. The wavelength difference will be "a" between the wavelength of 3rd transition line of Paschen series and that 2nd transition line B Balmer series where a = 10. In the circuit shown below, maximum zener diode current will be mA. 4 www (100-120) V- IL V=60V 310