Radioactivity Questions and Answers

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Define nuclear fission

asked Nov 18, 2021 in Physics Form 4 by Fidels

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In a certain x-ray tube, the electrons are accelerated by a pd of 12000V. Assuming all the energy goes to produce x-rays, determine the frequency of the x-rays produced. (Planks constant h = 6.62 ×10-34 J and charge of an electron, e = 1.6 ×10-19 C)

asked Aug 18, 2021 in Physics Form 4 by anonymous

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What property of lead makes it suitable for use as shielding material?

asked Aug 18, 2021 in Physics Form 4 by anonymous

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Figure 4 shows the features of an x-rays tube.

asked Aug 18, 2021 in Physics Form 4 by anonymous

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2 answers

X-rays are used for detecting cracks inside metal beams.

asked Aug 18, 2021 in Physics Form 4 by anonymous

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Arrange the following electromagnetic waves in order of their increasing wavelength. X-rays, gamma rays, ultra violet, visible light, infrared and microwaves.

asked Aug 18, 2021 in Physics Form 4 by anonymous

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1 answer

The figure below shows features of a diffusion cloud chamber used for detecting radiations from a radioactive source.

asked Aug 18, 2021 in Physics Form 4 by anonymous

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A radioactive isotope showed a count rate of 82 counts per second initially. After a time of 210 seconds, the count rate dropped to 19 counts per second. The average background countremained constant at 10 counts per second. What is the half-life of the material?

asked Aug 18, 2021 in Physics Form 4 by anonymous

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Explain why Carbon -14(614C) is radioactive while Carbon – 12 (612C) is not.

asked Aug 18, 2021 in Physics Form 4 by anonymous

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The following is a decay series of Uranium 238.

asked Aug 18, 2021 in Physics Form 4 by anonymous

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Differentiate between nuclear fission and nuclear fusion as used in the study of physics.

asked Aug 18, 2021 in Physics Form 4 by anonymous

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The table below shows isotopes and their percentage abundances.

asked Jul 27, 2021 in Chemistry Form 4 by anonymous

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The figure below shows the path of a radiation from a radioactive source moving in a magnetic field perpendicular

asked Jul 14, 2021 in Physics Form 4 by anony mous

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The figure below shows the cross-section of a diffusion cloud chamber used to detect radiation from radioactive sources.

asked Jul 8, 2021 in Physics Form 4 by anonymous

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The graph below shows radioactive decay of iodine.

asked Jul 8, 2021 in Physics Form 4 by anonymous

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A radioactive carbon-14 decays to nitrogen by beta particles as shown below.

asked Jul 8, 2021 in Physics Form 4 by anonymous

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Arrange the following radiations in order of increasing wavelengths. Infrared, blue light, ultraviolet, radiowaves, x-rays.

asked Jul 7, 2021 in Physics Form 4 by anonymous

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3g of 257Lr whose half-life is 8 days, remains after undergoing radioactive decay for 32 days. Find the original amount of substance.

asked Jul 7, 2021 in Chemistry Form 4 by anony mous

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State the process that takes place when;

asked Jul 7, 2021 in Chemistry Form 4 by anony mous

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State one use of radioactivity in agriculture.

asked Jul 5, 2021 in Chemistry Form 4 by anonymous

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