Q72.The intensity of gamma radiation from a given source is I. On passing through 36 mm of lead, it is reduced to I . The thickness of lead which will reduce the intensity to I will be 8 2 (1) 6 mm (2) 9 mm (3) 18 mm (4) 12 mm
What This Question Tests
This question applies the concept of exponential attenuation of radiation intensity to calculate the thickness required to reduce the intensity by a specific factor.
Concepts Tested
Formulas Used
I = I₀ * (1/2)^(x/x_half)
📚 NCERT Sections This Tests
13.4 — Obtain Approximately The Ratio Of The Nuclear Radii Of The Gold Isotope
Physics Class 12 · Chapter 13
13.4 Obtain approximately the ratio of the nuclear radii of the gold isotope 197 79 Au and the silver isotope 10747 Ag .
11.8 — Light Of Frequency 7.21 × 1014 Hz Is Incident On A Metal Surface.
Physics Class 12 · Chapter 11
11.8 Light of frequency 7.21 × 1014 Hz is incident on a metal surface. Electrons with a maximum speed of 6.0 × 105 m/s are ejected from the surface. What is the threshold frequency for photoemission of electrons?
13.2 — Obtain The Binding Energy Of The Nuclei 5626Fe And 20983 Bi In Units Of
Physics Class 12 · Chapter 13
13.2 Obtain the binding energy of the nuclei 5626Fe and 20983 Bi in units of MeV from the following data: m ( 5626Fe ) = 55.934939 u m ( 20983 Bi ) = 208.980388 u
📋 Question Details
- Chapter
- Nuclei
- Topic
- Attenuation of radiation
- Year
- 2005
- Shift
- Unknown
- Q Number
- Q72
- Type
- MCQ
- NCERT Ref
- Class 12 Physics Ch 13: Nuclei
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