14.Waves and Sound
medium

તાર પર લંબગત તરંગ $ y = 0.021\;\sin (x + 30t) \, m$ હોય,તો તારમાં તણાવ કેટલો થાય? તારની રેખીય ઘનતા $ 1.3 \times {10^{ - 4}} \, kg/m$ છે,

A

$10$

B

$0.5$

C

$1$

D

$0.12$

Solution

(d) $y = 0.021\sin (x + 30t)$==> $v = \frac{\omega }{k} = \frac{{30}}{1} = 30\,m/s$.

Using, $v = \sqrt {\frac{T}{m}} \Rightarrow 30 = \sqrt {\frac{T}{{1.3 \times {{10}^{ – 4}}}}} \Rightarrow T = 0.117\,N$

Standard 11
Physics

Similar Questions

Start a Free Trial Now

Confusing about what to choose? Our team will schedule a demo shortly.