Use of vernier callipers class 11 physics practical experiment 1 answers

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Use of vernier callipers class 11 physics practical experiment 1 answers

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this video link Use of vernier callipers class 11 physics practical experiment 1 answers Use of vernier callipers class 11 phy...
Class 11
Physics practical
Experiment no.1
Use of vernier callipers
Answers
By:solutions made easy


Multiple choice questions

1. If a smallest division on main scale of vernier callipers is 0.05cm and number of division on the vernier scale is 25, the least count of the vernier calliper is ...........
A. 0.0002 cm           B. 0.002 cm
C. 0.001 cm               D. 0.01 cm
Answer:  B. 0.002 cm

2. Upper Jaws are used to find ..........
A. Outer diameter
B. Inner diameter
C. Length              D. Thickness
Answer: B. Inner diameter


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Questions

1. What is zero error?
Answer:
It is a type of error in which an instrument gives a reading when the true reading at that time is zero. In case of Vernier calipers it occurs when a zero on the main scale does not coincide with a zero on Vernier scale it is called zero error for Vernier.

2. How do you apply the correction due to zero error?
Answer:
To get correct measurement with vernier callipers having a zero error, the zero error with its proper sign is always subtracted from the observed reading. Correct reading = Observed reading – zero error                                                           (with sign)


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