A progressive wave travels in a medium `M_(1)` and enters into another mediun `M_(2)` in which its speed decreases to `60%`. Then the ratio of the amplitude of the transmitted and the incident waves is

A progrssive wave travels in a medium M_(1) and enters into another medium M_(2) in which its speed decreased to 75% . What is the ratio of the amplitude of the (a). Reflected and the incident waves , and (b). Transmitted and the incident waves ?

Travelling wave travels in medium '1' and enters into another medium '2' in which it's speed gets decreased to 25% . Then magnitude of ratio of Amplitude of transmitted to rerflected wave is :

Travelling wave travels in medium '1' and enters into another medium '2' in which it's speed gets decreased to 25 % . Then magnitude of ratio of Amplitude of transmitted to rerflected wave is :

Travelling wave travels in medium '1' and enters into another medium '2' in which it's speed gets decreased to 25% . Then magnitude of ratio of Amplitude of transmitted to rerflected wave is :

A plance sound waves passes from medium 1 into medium 2 . The speed of sound in medium 1 is 200 m//s and in medium 2 is 100 m//s . The ratio of amplitude of the transmitted waves to that of incident waves is

A plance sound waves passes from medium 1 into medium 2 . The speed of sound in medium 1 is 200 m//s and in medium 2 is 100 m//s . The ratio of amplitude of the transmitted waves to that of incident waves is