Define All Types Of Errors In Physics.

Question:

Define All Types Of Errors In Physics.

Explanation:

In Physics, an error is defined as the difference between the actual value and the calculated value of any physical quantity.

There are two types of errors in physics:

Random Errors

Random error occurs when repeated measurements of the quantity give different values under the same conditions. This error occurs due to some unknown reasons.

Systematic Errors

Systematic errors occur when all the measurements of physical quantities are affected equally and give consistent differences in the readings. The error may occur due to:

• Poor calibration of the instrument
• Zero error in measuring instrument
• Incorrect calibration on the measuring instruments

The minimum value of charge on any charged body may be (a) 1.6 × 10^-19 (b) 1 coulomb (c) 1μC (d) 4.8 × 10^-12 coulomb

Question:

The minimum value of charge on any charged body may be 

(a) 1.6 × 10^-19 

(b) 1 coulomb 

(c) 1μC 

(d) 4.8 × 10^-12 coulomb

Answer:

Correct option: (a) 1.6 × 10^-19

Explanation:

The charge of any charged body in this universe is always a multiple of the charge of an electron. So the minimum charge of a body is ±e ( where e≈ 1.602×10^-19 Coulomb). If charge of a body is Q then Q= ±ne, where n is an integer.

Hence, the correct answer is option (a) "1.6×10^-19".