Why gamma rays are used to kill bacteria to sterilize surgical equipment etc ?

Related Mcqs:

1. Which of the following will be a better shield against gamma rays ?

   A. Ordinary water B. Heavy water C. Lead D. Aluminum...

2. Sterilization of surgical instruments medical supplies and bandages can be done by exposing them to a beam of_______________?

   A. α-rays B. β-rays C. γ-rays D. B and C have equal antiseptic propertie...

3. X-rays are electromagnetic waves like________________?

   A. Light waves B. Heat waves C. Microwaves D. γ-rays...

4. Wavelength of X-rays falling at glancing angle of 30? on a crystal with atmic spacing 2 x 10-10 for the fist order diffraction is________________?

   A. 4 x 10-10 m B. 2 x 10-10 m C. 0.02×10-10m D. 20×10-10m...

5. Two sources of light are coherent if they emit rays of_______________?

   A. same wavelength B. same amplitude of vibration C. same wave length with constant phase difference D. same amplitude and wavelength...

6. X-rays are similar in nature to_______________?

   A. Cathode rays B. Positive rays C. γ-rays D. Beta rays...

7. When X-rays are passed through successive aluminum sheets what happens to their thickness ?

   A. increases B. it decreases C. it remains same D. sometimes increases and sometimes decreases...

8. The minimum wavelength of X-rays can further be reduced by _______________?

   A. Reducing the pressure or cooling the target B. Increasing the temperature of the filament. C. Using a target element of higher atomic number D. Increasing the potential difference between the cathode and the target...

9. The characteristic X-rays spectrum is due to_____________?

   A. The illumination of the target metal by ultra-violet radiation B. The bombardment of the target by protons C. The bombardment of target by electrons D. The absorption of radiation by the target metal...

10. The minimum wavelength of X-rays produced by the bombardment of electrons on the screen of a television set where the accelerating potential is 2.0K V will be______________?

    A. 6.2 x 10-10m B. 9.1 x 10-18m C. 3.11 x 10-10m D. 4 x 10-10m...