The Digital Scholar

PRACTICAL 17 To find the density of a body heavier than water by Archimedes principle. VIVA VOCE   Viva Questions and Answers for Finding Density Using Archimedes' Principle Q1: What is the aim of the experiment? A1: The aim of the experiment is to find the density of a body heavier than water using Archimedes' principle. Q2: What is Archimedes' principle? A2: Archimedes' principle states that when a body is fully or partially submerged in a fluid, it experiences an upward buoyant force equal to the weight of the fluid displaced by the body. Q3: How do you determine the volume of the body using Archimedes' principle? A3: The volume of the body is determined by measuring the volume of water displaced when the body is submerged in water, which is equal to the volume of the body. Q4: Describe the procedure of the experiment briefly. A4:The procedure involves weighing the body in air, then submerging it in water and measuring the apparent loss in weight. The volume of t

PRACTICAL 16 To study the relationship between load and extension (Helical spring) by drawing a graph. VIVA VOCE   Q1: What is the aim of the experiment? A1:The aim of the experiment is to study the relationship between load and extension in a helical spring by drawing a graph. Q2: What is Hooke's Law? A2:Hooke's Law states that the extension of a spring is directly proportional to the load applied to it, provided the elastic limit is not exceeded. Q3: How do you calculate the spring constant (k)? A3:The spring constant (k) is calculated using the formula \( k = \frac{F}{x} \), where \( F \) is the load applied and \( x \) is the extension produced. Q4: What is the elastic limit? A4:The elastic limit is the maximum load that a spring can bear without undergoing permanent deformation. Q5: Describe the procedure of the experiment briefly. A5:The procedure involves hanging the helical spring vertically, adding known weights incrementally, measuring the corresponding extensions, an

  PRACTICAL 15 To prove that time period of a simple pendulum is independent of (i) mass of the pendulum (ii) amplitude of the vibration. VIVA VOCE 1.  What is the objective of the experiment?    Ans: The objective is to demonstrate that the time period of a simple pendulum remains constant irrespective of changes in its mass and amplitude. 2.  How is the time period of a pendulum defined?   Ans: The time period (T) of a pendulum is the time taken for one complete oscillation, i.e., the time it takes for the pendulum to return to its starting position. 3.  Explain how you varied the mass of the pendulum during the experiment.  Ans: We kept the length and amplitude of the pendulum constant while changing the mass by attaching different weights at the bottom of the pendulum bob. 4. What did you observe when you changed the mass of the pendulum? Ans: Despite changing the mass, we observed that the time period of the pendulum remained constant. 5.  Why does the time period remain constant

PRACTICAL 14 To study the effect of the length of simple pendulum on time and hence find the value of g by calculation VIVA VOCE 1. What is the objective of this experiment? Ans: The objective is to study the effect of the length of a simple pendulum on its time period and to calculate the acceleration due to gravity (g). 2. Describe the setup of this experiment. Ans: The setup typically involves suspending a small mass (pendulum bob) from a string of variable length and allowing it to oscillate freely. 3. How does the length of the pendulum affect its time period? Ans: The time period of a pendulum is directly proportional to the square root of its length. Longer pendulums have longer time periods, and vice versa. 4. What measurements are needed for this experiment? Ans: We need to measure the length of the pendulum and the time taken for a certain number of oscillations (usually a fixed number like 10 or 20). 5. How will you conduct the experiment to find the time period? Ans: We wil

Practical 13 To find the weight of an unknown object by using principle of moments. VIVA VOCE 1. What is the objective of this experiment?  Ans: The objective is to find the weight of an unknown object using the principle of moments. 2. Describe the setup of this experiment.  Ans: The setup typically involves a pivot point, a lever arm (such as a meter stick), and the unknown object suspended at a known distance from the pivot. 3. How does the principle of moments apply in this experiment? Ans: The principle of moments states that for an object to be in equilibrium, the sum of the clockwise moments about any point must be equal to the sum of the anticlockwise moments about the same point. This principle is used to find the weight of the unknown object. 4. What measurements are needed for this experiment? Ans: We need to measure the distance from the pivot point to the suspension point of the unknown object and any other weights used in the experiment. 5. How will you ensure the object

PRACTICAL 12  To find the weight of an unknown object by using vector addition of forces. VIVA VOCE 1.  What is the objective of this experiment?    Ans: The objective is to find the weight of an unknown object by using vector addition of forces. 2. Describe the setup of this experiment.   Ans: The setup involves suspending the unknown object from a support and attaching known weights to it. Strings are used to hang the weights, and their tensions are measured. 3.  How does vector addition of forces help in finding the weight of the unknown object?    Ans: By applying known weights to the unknown object and measuring the tensions in the strings, we can use vector addition to find the resultant force, which represents the weight of the object. 4. What principle governs the vector addition of forces in this experiment?    Ans: The principle of vector addition states that the resultant force of two or more forces acting on an object can be found by summing the individual forces as vectors

PRACTICAL 11 To find the tension in the strings by balancing a metre rod on the stands. VIVA VOCE 1. What is the purpose of this experiment?    Ans: The purpose is to find the tension in the strings by balancing a meter rod on the stands. 2. Describe the setup of this experiment.  Ans: The setup involves placing a meter rod horizontally on two stands. Strings are attached to each end of the rod, and weights are hung from the strings to create tension. 3.  Why is it necessary to balance the meter rod?    Ans: Balancing the meter rod ensures that the forces acting on it are in equilibrium, allowing us to accurately determine the tension in the strings. 4. How will you adjust the weights to achieve balance?   Ans: We will adjust the weights on either side of the meter rod until it remains level and stationary, indicating that the tensions in the strings are balanced. 5.  What factors affect the tension in the strings?    Ans: The tension in the strings is affected by the weights attached

PRACTICAL 10 To verify the principle of moments by using a metre rod balanced on a wedge. VIVA VOCE 1.  What is the objective of this experiment?    Ans: The objective is to verify the principle of moments by using a meter rod balanced on a wedge. 2. Explain the principle of moments.    Ans: The principle of moments states that for an object to be in equilibrium, the sum of the clockwise moments about any point must be equal to the sum of the anticlockwise moments about the same point. 3.  How will you set up the experiment?    Ans: Place the meter rod horizontally on a wedge and adjust the position of weights along the rod until it is balanced.  4. What equipment do you need for this experiment?    Ans: You will need a meter rod, a wedge, weights, and a balance. 5. Why is it important to ensure the meter rod is balanced?    Ans: Balancing the meter rod ensures that the principle of moments can be accurately demonstrated, showing that the clockwise and anticlockwise moments are equal.