NTA Abhyas 2020
- Exam
- NTA Abhyas
- Year
- 2020
- Subject
- Physics
- Chapter
- Experimental Physics
NTA Abhyas 2020 · Physics · Experimental Physics
If a tuning fork of frequency ( f _ 0 )340Hz and tolerance ± 1 % is...
If a tuning fork of frequency and tolerance is used in the resonance column method for determining the speed of sound. If the first and the second resonance are measured at and ,& then the permissible error in speed of sound is
Options
- A
- B
- C
- D
Correct answer
A.
Step-by-step solution
\text{V} = {2 f}_{0} \left({l}_{2} - {l}_{1}\right)
\text{let} {l}_{2} - {l}_{1} =
{l}_{2} = \left(\text{74.70} \mathop{+}_{¯} \text{0.01}\right) \text{cm}
x \text{%} = \dfrac{\text{0.11}}{\text{50.70}} \times \text{100}<br /><br /> =\text{0.22%}<br /><br /> \Delta \text{V} \text{%} = \Delta {f}_{0} \text{%} + \Delta x \text{%}<br /><br /> =\text{1.22} \text{%}<br /><br /> =\text{1.2} \text{%}
\text{let} {l}_{2} - {l}_{1} =
{l}_{2} = \left(\text{74.70} \mathop{+}_{¯} \text{0.01}\right) \text{cm}
x \text{%} = \dfrac{\text{0.11}}{\text{50.70}} \times \text{100}<br /><br /> =\text{0.22%}<br /><br /> \Delta \text{V} \text{%} = \Delta {f}_{0} \text{%} + \Delta x \text{%}<br /><br /> =\text{1.22} \text{%}<br /><br /> =\text{1.2} \text{%}