If a matchbox of size 5 cm × 4 cm × 1 cm is filled with nuclear matter, what will be its expected mass? The density of nuclear matter is approximately 2.3 × 1017 kg m-3.
4.6 × 1012 kg
The volume of the matchbox is:
V = 5 cm × 4 cm × 1 cm = (5 × 10-2 m) × (4 × 10-2 m) × (1 × 10-2 m)
= 2 × 10-5 m3.
Mass = Density × Volume = (2.3 × 1017) × (2 × 10-5)
= 4.6 × 1012 kg.
Thus, the correct answer is (d).
Important Questions from Nuclei
Which of the following is an example of nuclear fusion?
The half-life of a radioactive substance is 10 days. How many days will it take to disintegrate 3/4 of its initial value?
If a matchbox of size 5 cm × 4 cm × 1 cm is filled with nuclear matter, what will be its expected mass? The density of nuclear matter is approximately 2.3 × 1017 kg m-3.
Which of the following is an example of nuclear fusion?
The half-life of a radioactive substance is 10 days. How many days will it take to disintegrate 3/4 of its initial value?
