Live Viva || How to do Viva In front of Examiner Viva Question For Physics Practical class 12th

So this_ssl should remain, why, to close one side one end closed, one end open Roll number 23 Bat away, please take your seat General, you have five marks. What is the value of y, worth five marks? The long experiment is by Ten Marx. Short Experiment worth 5 marks Activity: 5 marks, okay Which experiment was obtained in the long one? What is a resonance tube? A resonance tube is a tube of this kind. Inside which a stationary wave is formed And the frequency that remains in that stationary wave We, the people, use a tuning fork with a certain frequency generate, matches with it what is the velocity of the sound in air at room temperature 343 meters per second, okayבלות So we call this a resonance tube. Why are they called resonance tubes? A standing wave is formed inside it. The frequency of the tuning fork It will match its frequency. It matches the frequency of the stationary wave. becomes equal to the force of vibration Why was water poured here? water To keep it open on one side So keep this, why is this To close one side one end closed, one end open Next, what is the short experiment? short experiment Newton's law of cooling What did Newton say about it? cooling of, rate of cooling of according to Newton's law of cooling according to Newton's law of cooling, the rate of heat loss directly proportional to the temperature difference between the body and Its surroundings, okay, very fine activity What is surface tension? surface tension, it is a tangential force force acting on a acting on an imaginary line drawn on a free surface of liquid Okay, very fine. what is the value of least count value of the microscope, 0.001 centimeter 0.001 centimeter What is this? It is a carbon resistor. carbon resistor No, this is the resistor. Okay, how will you find the value? of resistor, resistance of this resistor, using its color code color code, very fine What is this? It's an LED. Light Emitting Diode light emitting diode how will you recognize Which is positive and which is negative? No idea What is this? transistor transistor, which is the base, emitter, and collector The middle one is the base. and the string on the right side It is a collector. and it is the emitter Okay, very fine. Thank you. What was the long experiment? oscillation the oscillator what is the difference between oscillator and oscillation up and down up down if up and down are not motion force constant under what condition the force constant depends becomes constant study What is frequency? define the frequency I don't know What is a second pendulum? You study I have taught you I have taught you in the extra class. second pendulum Row number 2 Row number 31 Your vector is 5 marks. General is 5 marks Okay What is the first long-term experiment? what you need to find out in a long experiment There is a constant k. force constant What is the force constant? k is the force constant The force constant is a measure of the stiffness of a bond or spring, defined as the force required to produce a unit displacement from equilibrium. In the context of molecular vibrations, it quantifies the strength of the restoring force that acts to return atoms to their equilibrium positions when displaced. It is typically denoted by the symbol k and has units of newtons per meter (N/m) in the SI system. How did you perform? I am performing you are performing This is my activity What is a second pendulum? How did you perform? First I measured bob by using a vernier caliper I found the radius of Bob. with the help of a vernier caliper After that, I started the stopwatch. and from one angle I made it oscillate. made it oscillate so How many times did it oscillate? I measured 2 times then I found the mean the same way I for a second pendulum took different readings in different lengths What should the length be? of a second pendulum After that, what have you done? unknown frequency finding undefined frequency What is frequency? Sir, I can tell you how I did. You have found the frequency. What is frequency? You are in class. What is frequency? I can't define it directly. but I can tell you how I performed from start to end if we increase the frequency of the tuning fork What is the length? Length increases increases if we increase Length decreases if it is 16 when I decrease the frequency Length increases When frequency decreases, wavelength increases. This is for sure. I am certain Thank you. next roll number 2 Roll Number 2