
What will be the modulation index of the wave shown in the figure:

Answer
437.7k+ views
Hint: Learn the definition of AM wave. Study the definition of modulation index and its importance. Use the formula for modulation index for amplitude modulated wave to find the modulation index of the graph given.
Formula used:
The modulation index of a amplitude modulated wave is given by,
Where, is the modulation index of the wave is the maximum amplitude of the of the wave and is the minimum amplitude of the wave.
Complete step by step answer:
We know that amplitude modulated is one type of modulated wave where the information is modulated into the amplitude of the carrier wave. The modulation factor of a wave decides how well a wave is modulated in the carrier signal. If the value of the modulation index is 1 the wave is said to be fully modulated.
Now, the value of modulation index for amplitude modulated wave is given by,
Now, here we can see from the graph that the maximum voltage amplitude and the minimum voltage amplitude of the AM wave is .
Hence, putting the values we will have,
Hence, the modulation index of the given amplitude modulated wave is .
Note: The modulation index of any wave is a dimensionless quantity as it is the ratio of the voltages. The percentage modulation is the percentage of the modulation index in this case the modulation percentage is . It represents that only of the signal wave is modulated in the carrier wave.
Formula used:
The modulation index of a amplitude modulated wave is given by,
Where,
Complete step by step answer:
We know that amplitude modulated is one type of modulated wave where the information is modulated into the amplitude of the carrier wave. The modulation factor of a wave decides how well a wave is modulated in the carrier signal. If the value of the modulation index is 1 the wave is said to be fully modulated.
Now, the value of modulation index for amplitude modulated wave is given by,
Now, here we can see from the graph that the maximum voltage amplitude
Hence, putting the values we will have,
Hence, the modulation index of the given amplitude modulated wave is
Note: The modulation index of any wave is a dimensionless quantity as it is the ratio of the voltages. The percentage modulation is the percentage of the modulation index in this case the modulation percentage is
Latest Vedantu courses for you
Grade 10 | MAHARASHTRABOARD | SCHOOL | English
Vedantu 10 Maharashtra Pro Lite (2025-26)
School Full course for MAHARASHTRABOARD students
₹33,300 per year
Recently Updated Pages
Master Class 12 Business Studies: Engaging Questions & Answers for Success

Master Class 12 English: Engaging Questions & Answers for Success

Master Class 12 Economics: Engaging Questions & Answers for Success

Master Class 12 Social Science: Engaging Questions & Answers for Success

Master Class 12 Maths: Engaging Questions & Answers for Success

Master Class 12 Chemistry: Engaging Questions & Answers for Success

Trending doubts
Which are the Top 10 Largest Countries of the World?

Why is insulin not administered orally to a diabetic class 12 biology CBSE

a Tabulate the differences in the characteristics of class 12 chemistry CBSE

Why is the cell called the structural and functional class 12 biology CBSE

The total number of isomers considering both the structural class 12 chemistry CBSE

Differentiate between homogeneous and heterogeneous class 12 chemistry CBSE
