Bihar Board Physics Class 12 Question Papers 2017 with Solutions - Free PDF Download.
FAQs on Bihar Board (BSEB) Question Paper for Class 12 Physics 2017
1. What is the Alternate Usage of a Diode?
A diode is applicable to act as a rectifier. The usage of the diode is more convenient in the conversion of alternating current to direct current. The entire phenomenon is known as rectification. The rectifiers are also applicable to let a huge amount of current through the diode.
2. Find the max distance to cover a TV transmission tower, which is placed on the surface of the earth with a height of 245m?
Here, h = the height of the TV tower
Let xmax = the maximum distance the TV tower can transmit
According to the formula, xmax = √2hR
Here, R = Radius of Earth
R = 6.4 * 106 m
Therefore, xmax= √2*245*6.4* 106 = 56,000 m = 56 km.
3. What is the Factor Involved With the Energy of an Emitted Photoelectron?
Kinetic energy is the factor involved with the energy of emitted photoelectrons. The rise in K.E leads to the rise in the amplitude of light.
4. What do you mean by Modulation, and what are its varieties?
The modification made in the carrier signal for its improvement for transmission is known as modulation. In this process, the carrier signals get modulated in a periodic waveform.
There are three kinds of modulation, these are:
Amplitude Modulation
Frequency Modulation
Phase Modulation