Proportional counter nuclear physics

The ratio of secondary neutrons produced to the original neutrons is called ..............................................

The amount of energy / radiation absorbed per gram of body tissue is measured in unit called ....................

The equation which links Energy to wavelength is...

• $E=hf$

• $E=\frac{hf}{\lambda}$

• $E=\frac{hc}{\lambda}$

• $c=f\lambda$

Atomic number ( Z) refers to

• number of protons

• number of neutrons

• number of nucleons

• None of the options

Mass defect refers to

• inaccurate measurements of mass of nucleons

• difference in the number of neutrons

• mass annihilated to produce energy to bind the nucleons

• none of the options

Q4. Identify the device:

• Bainbridge and Jordan Double Focusing Mass spectrograph

• Bainbridge Mass spectrograph

• Mass Spectrograph

• None of the above

Isotopes of an element have different chemical behaviour

• True

• False

A sample of radioactive material has an initial activity of 240 s^-1 . If its half-life is 30 minutes, how much is its activity after 2 hours?

• 15 s^-1

• 30 s^-1

• 60 s^-1

• 120 s^-1

Isobars of an element have different chemical behaviour

• True

• False

A ____ is a discrete, quantized bundle of energy

• Photoelectric effect

• Photon

• Quantized

• Proton