8.Electromagnetic waves
easy

સમતલમાં વિદ્યુતચુંબકીય તરંગ માટે $B=3.01 \times 10^{-7} \sin \left(6.28 \times 10^2 x+2.2 \times 10^{10} t\right) T$ છે. તેની તરંગલંબાઈ ..... $cm$ હશે. [જ્યાં $x$ એ $cm$ અને $t$ સેકન્ડમાં છે)

A

$1$

B

$628$

C

$1.129$

D

$314$

Solution

(a)

$\bar{B}=3.01 \times 10^{-7} \sin \left(6.28 \times 10^2 x+2.2 \times 10^{10} t\right) \,T$

$k=6.28 \times 10^2$

$\omega=2.2 \times 10^{10}$

$k=\frac{2 \pi}{\lambda}$

$\therefore \lambda=\frac{2 \pi}{6.28 \times 10^2}=10^{-2} \,m$

Standard 12
Physics

Similar Questions

Start a Free Trial Now

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