Tension is a state of mental or emotional strain caused by stress, uncertainty or conflict. It builds through pressure, expectations or opposing forces. Physical tension tightens muscles and affects the body. Emotional tension creates anxiety and unease. It can arise in relationships, workplaces and society, leading to frustration and conflict.
Oscillations in Class 11 Physics cover periodic motion where objects move back and forth around a mean position. It includes simple harmonic motion, time period, frequency and displacement. The chapter explains energy in oscillations and damped or forced oscillations. Concepts like pendulums and springs are important for CBSE Exam 2024-25 and help in understanding wave motion.
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In a stretched string, the speed of the wave is given by:
v = √(T/μ).
Where:
– v is the wave speed,
– T is the tension in the string,
– μ is the linear mass density (with mass per unit length).
From the equation, it can be seen that the wave speed v is directly proportional to the square root of tension T. With the increase in tension, the numerator goes up and, hence, the speed of the wave increases.
Thus, increasing the tension in the string results in an increase in wave speed.
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