Accuracy Precision Of Instruments And Errors In Measurement

The formula for acceleration is:

Where: - is the velocity, - is the time. If the acceleration is given by: where is force and is the mass. The percentage error in a product or quotient is the sum of the percentage errors in the individual quantities. Therefore, the percentage error in the acceleration is the sum of the percentage errors in mass, length, and time.
Given: - The percentage error in mass = 1%, - The percentage error in length = 2%, - The percentage error in time = 3%. The maximum permissible error in acceleration is: Substituting the given values:

Correct Answer:

Correct Answer: (A) 8%

The band gap energy of Germanium is 0.72 eV. This means that an electron requires 0.72 eV of energy to transition from the valence band to the conduction band, allowing electrical conduction.

The radioactive decay law states that the number of undecayed atoms decreases exponentially over time.
The fraction of undecayed atoms at time is given by: where:
- is the initial number of atoms,
- is the decay constant,
- is the time elapsed.
Since the decay follows an exponential pattern, the correct answer is .