Poll Kriti Narang Asked: November 7, 2019In: Class 12 Audio sine waves of 3 kHz frequency are used to amplitude modulate a carrier signal of 1.5 MHz. Which of the following statements are true? Which one is correct. cbseclass 12class 12 physicscommunication systemsncertphysics
Poll Kriti Narang Asked: November 7, 2019In: Class 12 A 100m long antenna is mounted on a 500m tall building. The complex can become a transmission tower for waves with λ. Select the correct one. cbsecbse exams 2020class 12class 12 physicsncertncert solutionsphysics
Kriti Narang Asked: November 7, 2019In: Class 7 Why should we prefer to use paper bags rather than polythene bags? Give your opinion. cbsecbse exams 2020class 7class 7 sciencencertscience
Poll Kriti Narang Asked: November 7, 2019In: Class 12 Three waves A, B and C of frequencies 1600 kHz, 5 MHz and 60 MHz, respectively are to be transmitted from one place to another. Which of the following is the most appropriate mode of communication: Select the correct answers. cbsecbse exams 2020class 12class 12 physicscommunication systemsncertncert solutions
Poll Kriti Narang Asked: November 7, 2019In: Class 12 A speech signal of 3 kHz is used to modulate a carrier signal of frequency 1 MHz, using amplitude modulation. The frequencies of the side bands will be Select the correct one. cbseclass 12class 12 physicscommunication systemsncertphysics
