Errors in Measurment

Q. While measuring the length of an object, if the zero mark of a scale does not coincide with one of the ends of the object, then such an error is called _____ error.

1. parallax
2. zero
3. instrumental
4. (a) and (b) above.

Q. Which of the following distances cannot be measured with the given scale by using it only once?

1. 
   0.15 metre
2. 
   0.2 metre
3. 
   0.11 metre
4. 0.05 metre

Q.

Two students are measuring the length of an object using the same instrument one after the other. They will always measure the same value.

1. True

2. False

Q. Which of the following lengths can be measured by the scale given below?

1. Cannot be used to measure any length
2. 2 cm
3. Both 2 cm and 12 cm
   
4. 12 cm

Q. Which of the following lengths can be measured by the scale given below?

1. Cannot be used to measure any length
2. 12 cm
3. 2 cm
4. Both 2 cm and 12 cm
   

Q. Rajesh measures the length of a box as 30 cm using a scale that has a broken left end. The actual length of the box is 29 cm. The zero error is _____ cm.

1. 1

Q. A block measured by a broken scale is 50 cm long. Its actual length is 35 cm. The zero error is

1. 120 mm
2. 150 mm
3. 16 cm
4. 18 cm

Q. What is parallax error?

Q. You are provided with a scale as shown below. Which of the following cannot be measured with scale by using it only once?

1. 0.15 m
2. 0.20 m
3. 0.35 m
4. 0.10 m

Q. Which of the following distances cannot be measured with the given scale by using it only once?

1. 
   0.15 metre
2. 
   0.2 metre
3. 
   0.11 metre
4. 0.05 metre

Q. Rajesh measures the length of a box to be $30cm$ using a scale that has a broken left end. The actual length of the box is $29cm$. What is the zero error?

1. 1

Q. Rajesh measures the length of a box to be $30cm$ using a scale that has a broken left end. The actual length of the box is $29cm$. What is the zero error?

1. $30cm$
2. $1cm$
3. $29cm$
4. $59cm$

Q. Rajesh measures the length of a box to be $30.5cm$ using a scale that has a broken left end. The actual length of the box is $29cm$. What is the zero error?

1. 0.5 cm
   
2. 1.5 cm
3. 0.05 cm
4. 1 cm

Q. Ashwin is required to take the measurement of a wooden box. Which of the following should be the proper position of his eye for taking the reading?

1. 
2. 
3. 
4. 

Q. Which error is caused due to apparent change in position of the reading as viewed from different angles?

1. Zero error
2. Parallax error
3. Numerical error
4. Angular error

Q. _____________ arises when the reading of a scale is taken from a random angle.

1. Zero error
2. Numerical error
3. Parallax error
4. Alignment arror

Q. A person takes three measurements in different angles as shown in the figure. Which of the readings is correct?

1. 19.82 ml
2. None of the above
3. 19.70 ml
4. 19.62 ml

Q. The position of the eye is very important for taking measurements. There might be an error in the reading, if our eye position is not proper. This error is known as ________ error.

1. parallax
2. zero
3. (a) and (b) above.
4. instrumental

Q. Which of the following should be the proper position of the eye for taking the reading?

1. 
2. 
3. 
4.