6. 7. 8. 9. 10. The displacement current of 4.425 A is developed in the space between the plates of parallel plate capacitor when voltage is changing at a rate of 106 Vs. The area of each plate of the capacitor is 40 cm. The distance between each plate of the capacitor is x x 103. The value of x is, (Permittivity of free space, E = 8.85102 C2Nm). The momentum of inertia of a uniform thin rod about a perpendicular axis passing through on end is 11. The same rod is into a ring and its moment of inertia about a diameter is 12. If 12 -is- -, then the value of x will be 3 The half life of a radioactive substance is 5 years. After x years a given sample of the radioactive substance gets reduced to 6/25% of its initial value. The value of x is_ In a double slit experiment with monochromatic light, fringes are obtained on a screen placed at some distance from the plane of slits. If the screen is moved by 5 10-2m towards the slits, the change in fringe width is 3 10-3cm. If the distance between the slits is 1mm, then the wavelength of the light will be nm. An inductor of 0.5 mH, a capacitor of 200 F and a resistor of 22 are connected in series with a 220V ac source. If the current is in phase with the emf, the frequency of ac source will 10 Hz. be