Question
Define the term 'activity' of radionuclide. Write its SI unit.
✓
Answer
The total decay rate of a sample of one or more radionuclide is called activity.
Alternate Answer
Radioactive disintegration taking place per second.Alternate
Answer$\text{R} = - \frac{\text{dN}}{\text{dt}} , $where N is the total number of radionuclides at any time ‘t’. SI unit-becquerel(Bq) .
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
Is it possible in a LCR series circuit that the value of applied potential on any component of circuit is more than the peak value of applied alternating potential?
What is the net magnetic moment of atom of diamagnetic substance?
A current $\text{i}_1=\text{i}_0\sin\omega\text{t}$ passes through a resistor of resistance R. How much thermal energy is produced in one time period? A current $\text{i}_2=-\text{i}_0\sin\omega\text{t}$ passes through the resistor. How much thermal energy is produced in one time period? If i1, and i2 both pass through the resistor simultaneously, how much thermal energy is produced? Is the principle of superposition obeyed in this case?
→The elastic limit of steel is 8 × 108N/m2 and its Young's modulus 2 x 1011N/m2. Find the maximum elongation of a half meter steel wire that can be given without exceeding the elastic limit.
If a thin lens is dipped in water, does its focal length change?
Two bar magnets are quickly moved towards a metallic loop connected across a capacitor 'C' as shown in the figure. Predict the polarity of the capacitor.
Does the electric potential increase or decrease when moving along the lines of electric force?
Can alternating galvanometer measure both alternating and direct currents?
What is the direction of the electric dipole moment vector quantity?
Two proton beams going in the same direction repel each other whereas two wires carrying currents in the same direction attract each other. Explain.