1. Choose and write the correct answer: (a) 1 mCi = (i) 3.7X10^10 Bq (ii) 3.7X10^7 Bq (iii) 3.7X10^7 Bq (iv) 3.7X10^-10 Bq (b) In air out put ratio is – (i) collimator scatter fact... 1. Choose and write the correct answer: (a) 1 mCi = (i) 3.7X10^10 Bq (ii) 3.7X10^7 Bq (iii) 3.7X10^7 Bq (iv) 3.7X10^-10 Bq (b) In air out put ratio is – (i) collimator scatter factor (ii) phantom scatter factor (iii) TPR (iv) none of these (c) Phantom scatter factor is – (i) independent of field size (ii) increases with field size (iii) decreases with field size (iv) none of these (d) Dose in a phantom for 0X0 field is called – (i) primary dose (ii) scatter factor (iii) collimator scatter (iv) phantom scatter factor (e) 1 Bq is defined as – (i) 100 disintegration/sec (ii) 3.7X10^10 disintegration/sec (iii) 1 disintegration/sec (iv) 2.58 X 10^4 disint/sec (f) Electron beam can be considered as – (i) mono-energetic (ii) hetero energetic (iii) none of these (g) For Co-60 gamma energy, the surface dose is – (i) smaller than Dmax (ii) higher than Dmax (iii) same as Dmax (iv) none of these (h) The most predominant mode of interaction for mega voltage photon beam is – (i) photoelectric effect (ii) Compton effect (iii) pair production (iv) photodisintegration.
Understand the Problem
The question is a multiple-choice quiz related to physics concepts, specifically in the area of radiation physics or medical physics. The user likely needs assistance in selecting the correct answers from the provided options for a range of specific statements about radiation measurements and interactions.
Answer
(a) (iii), (b) (i), (c) (ii), (d) (i), (e) (iii), (f) (ii), (g) (i), (h) (ii)
The correct answers are: (a) (iii) 3.7X10^7 Bq, (b) (i) collimator scatter factor, (c) (ii) increases with field size, (d) (i) primary dose, (e) (iii) 1 disintegration/sec, (f) (ii) hetero energetic, (g) (i) smaller than Dmax, (h) (ii) Compton effect.
Answer for screen readers
The correct answers are: (a) (iii) 3.7X10^7 Bq, (b) (i) collimator scatter factor, (c) (ii) increases with field size, (d) (i) primary dose, (e) (iii) 1 disintegration/sec, (f) (ii) hetero energetic, (g) (i) smaller than Dmax, (h) (ii) Compton effect.
More Information
These questions relate to radiology and nuclear physics concepts, such as unit conversions, scatter factors, electron beam characteristics, and photon interactions.
Tips
Ensure you understand the basic conversion factors and interaction principles in radiology and nuclear physics.
AI-generated content may contain errors. Please verify critical information
