## L2 – Basics of Angles Units and Measurements

Topics/Questions discussed in this video:   In this lecture I am discussing the Basics of Angles, Basics of Radian, Conversation Between Degree and Radian of Chapter 2 Units and Measurements Class 11 Physics For IIT Jee Mains/Neet having explanations from basic...

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## L3 – Parallax Method Units and Measurements

Topics/Questions discussed in this video: Example 2.2 A man wishes to estimate the distance of a nearby tower from him. He stands at a point A in front of the tower C and spots a very distant object O in line with AC. He then walks perpendicular to AC up to B, a...

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## L4 – Measurement Errors – Units and Measurements

Topics/Questions discussed in this video:   Example 2.7 We measure the period of oscillation of a simple pendulum. In successive measurements, the readings turn out to be 2.63 s, 2.56 s, 2.42 s, 2.71s and 2.80 s. Calculate the absolute errors, relative error or...

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## L5 – Example 2.8 – Errors in sum, difference, product, divide and power

Topics/Questions discussed in this video: In this lecture I am discussing Example 2.8 Errors in sum, difference, product, divide and power for Chapter 2 Units and Measurements Class 11 Physics IIT Jee Mains/Neet. Example 2.8 The temperatures of two bodies measured by...

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## L8 – Example 2.6 – Units and Measurements

Topics/Questions discussed in this video: Example 2.6 Two clocks are being tested against a standard clock located in a national laboratory. At 12:00:00 noon by the standard clock, the readings of the two clocks are : MondayTuesdayWednesday Thursday FridaySaturday...

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## L9 – Example 2.9 to 2.12 Units and Measurements

Topics/Questions discussed in this video: Example 2.10 Two resistors of resistances R1 = 100±3 ohm and R2 = 200 ± 4 ohm are connected (a) in series, (b) in parallel. Find the equivalent resistance of the (a) series combination, (b) parallel combination. Use for (a)...

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## L10 – Exercise 2.1 to 2.6 Units and Measurements

Topics/Questions discussed in this video: Note : In stating numerical answers, take care of significant figures. Exercise 2.1 Fill in the blanks (a) The volume of a cube of side 1 cm is equal to .....m3 (b) The surface area of a solid cylinder of radius 2.0 cm and...

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## L11 – Exercise 2.7 to 2.15 Units and Measurements

Topics/Questions discussed in this video: Exercise 2.7 A student measures the thickness of a human hair by looking at it through a microscope of  magnification 100. He makes 20 observations and finds that the average width of the hair in the field of view of the...

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## L12 – Exercise 2.16 to 2.24 Units and Measurements

Topics/Questions discussed in this video: Exercise 2.16 The unit of length convenient on the atomic scale is known as an angstrom and is denoted by Å: 1 Å = 10–10 m. The size of a hydrogen atom is about 0.5 Å. What is the total atomic volume in m3 of a mole of...

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