The wavelength of sound in air is 1.5 m and that in liquid is 2 m. If the velocity of sound in air is 330 m/s, the velocity of sound in liquid is 

Correct option is  D) 57° C

Given: n = 1000 kHz = 106 Hz, va = 340 m/s, vw = 1486 m/s To find: Reflected wavelength (λR), Transmitted wavelength (λT), Formula: v = nλ Calculation: In different medium, frequency of sound wave remains same. From formula, Sound is...

Given: λa = 1 m, λl = 2.5 m, va = 330 m/s, To find: Speed of sound (vl) Formula: v = nλ Calculation: From formula, Since the frequency n remains the same, va = nλa and vl = nλl ∴ \(\frac{v_l}{v_a}=\frac{λ_l}{λ_a}\) ∴ vl = va \(\frac{λ_l}{λ_a}\) =...

Given: T1 = 27 °C = 27 + 273 = 300 K, v1 = 340 m/s, T2 = 127 °C = 127 + 273 = 400 K To find: Velocity (v2) Formula: \(\frac{v_1}{v_2}=\sqrt{\frac{T_1}{T_2}}\) Calculation: From formula, v2 = v1 \(\sqrt{\frac{T_2}{T_1}}\) = 340, \(\sqrt{\frac{400}{300}}\) =...

Correct option is: (D) \(\frac{330}{\sqrt{2}}\) m/s

Correct option is: (C) 7 m

Correct option is: (D) 0.2 × 10-2 s

Correct option is: (C) 312 m/s

Correct Answer - चूँकि बत्तियाँ समान्तर - क्रम में जुड़ी हैं , अतः सभी का वोल्टेज एक ही होगा । 90 ऐम्पियर , Rs. 415.80.

Correct Answer - `20 ms^(-1)`