KK NO () EXERCHES IbQuestions 4,5 and 6)
(2) In the formation of a concave mirror, when the object is placed beyond the centre of curvature
de image formed are
() in a converging lens, when the object is at infinity, the images formed are
(4) Light from a narrow slit passes through two parallel slits 0.2em apart, find the wavelength of the
light if the interference fringes on a screen Im from the two slits which are 0.25mm apart
(4) If a 120pl capacitor is charged to a potential difference of 120V before connecting it to another
capacitor, Calculate de capacitance of the second capacitor if the potential difference across it is BOV
(5)A capacitor C-4,5 microfarad is charged to a potential difference of 120V the charger battery)
is removed and de charged capacitor is connected to another uncharged capacitor of value C-6
microfarad. Calculate the energy stored in the original capacitor before connecting to another​