The intensity of gamma radiation form a given source is I. On passing through 27 mm of lead, it is reduced to `I//8`. The thickness of lead which will reduce the intesity to `I//2` will be:

The intensity of gamma radiation from a given source is I On passing through 36 mm of lead , it is reduced to (1)/(8) . The thickness of lead which will reduce the intensity to (1)/(2) will be

The intensity of gamma radiation from a given source is I On passing through 36 mm of lead , it is reduced to (1)/(8) . The thickness of lead which will reduce the intensity to (1)/(2) will be

The intensity of gamma radiation from a given source is 1 On passing through 36 mm of lead , it is reduced to (1)/(8) . The thickness of lead which will redace the intensity to (1)/(2) will be

The inteisity of gamma radiation from a given source is I_(0) . On passing throug 37.5 mm of lead it is reduced to I_(0) // 8. the thickness of lead which will reduce It to I_(0) //2 is -

Intensity of gamma rays from the given source is I_0 . On passing through X m of lead, it is reduced to I0//8 . Thickness of lead which will reduce it to (I_0//2) in m is