Time intervals measured by a clock give the following readings

• • • • • • What Is Time Interval? The amount of time between two given times is known as time interval. In other words, it is the amount of time that has passed between the beginning and end of the event. It is also known as elapsed time. Let’s understand this concept with an example of time interval. Example: Sam had soccer practice after school. Training started at 4:00 p.m. and ended at 5:00 p.m. For how long did he play? The interval between 4:00 p.m. and 5:00 p.m. is one hour. So, Sam played soccer for one hour. Units for Measuring Time Interval of time is measured in different units. Each unit describes a different amount of time. Some units are better suited to specific intervals of time. For example, if you were baking a cake in the oven, you would choose to measure the time in minutes or maybe in hours. If you were calculating the time for your birthday from a specific date, you would prefer to measure the time in days, weeks, or months (depending on how far away it was). The smallest unit of time used every day is a second. 1 minute $= 60$ seconds1 hour $= 60$ minutes24 hours $= 1$ day Seconds, minutes and hours can be calculated on a clock or watch. If we want to measure bigger time units, we prefer a calendar. Seconds, minutes and hours can be calculated on a clock or watch. If we want to measure bigger time units, we prefer a calendar. 1 week $= 7$ days1 month $= 30$ or 31 or 28 or 29 days (depending on the month and year)1 year $= 12$ months Also, • 10 years...

Views: 5,344 25 mL of a solution of Na 2 ​ CO 3 ​ having a specific gravity of 1.25 g mL − 1 required 32.9 mL of a solution of HCl containing 109.5 g of the acid per litre for complete neutralization. Calculate the volume of 0.84 N H 2 ​ SO 4 ​ that will be completely neutralized by 125 g of Na 2 ​ CO 3 ​ solution. 2 07 Time intervals measured by a clock give the following readings 1.25 s , 1.24 s , 1.27 s , 1.21 s and 1.28 s. What is the percentage relative error of the observations? [NEET (Oct.) 2020] Updated On Mar 30, 2022 Topic Mole Concept & Redox Subject Chemistry Class Class 11 Answer Type Video solution: 1 Upvotes 54 Avg. Video Duration 11 min

Question No. 1 Time intervals measured by a clock give the following readings: 1.25 s , 1.24 s , 1.27 s , 1.21 s and 1.28 s What is the percentage relative error of the observations? [NEET-2020 (Phase-II)] A 1.6% B 2% C 4% (D) 16% Updated On Apr 7, 2023 Topic Kinematics and Laws of Motion Subject Physics Class Class 12 Passed Answer Type Video solution: 1 Upvotes 116 Avg. Video Duration 7 min

• In which type of spherical mirrors is the outer is a device used to view surface painted? very far-off objects like comets and • Write two major differences between a stars. The world's largest reflector type sphencal mirror and a plane mirror. telescope is called Gran Telescopto • At which position of an object docs a concave Canarias. It is situated at the Canary Islands, Spain. The diameter of its mirror form a virtual image? • Which type of mirror is used in the headlights mirror is 10.4 m of vehicles and in torchlights? • Take a suitable dish and put oil in it. • First fry onions, green chillis and condiments until they turn into light brown in colour. • Add ginger - garlic paste to it and allow the mixture to fry in oil for about 5 − 10 minutes. • Add sufficient water and bring it to boil. Add salt to it. • Add rice and moong dal. • Cook it on low flame for about half an hour. The delicious kichidi is ready.

Views: 5,785 3 kg ball sorikes a heavy rogid wall with a speed of 10 m / s at an argle 6 0 ∘. It gets rqueted with the same speed and angle as shawn in fig. If the boll is en. Contor with for 0.20 \& what is the averoge force exarted on the boll by the woll. (0) 150 N (b) zoro (e) 150 3 ​ N (d) 360 N [NEET 2020 Phase 1] 14. Time intervals measured by a clock give the following readings: 1.25 s , 1.24 s , 1.27 s , 1.21 s and 1.28 s What is the percentage relative error of the observations? Updated On May 21, 2023 Topic Modern Physics Subject Physics Class Class 12 Passed Answer Type Video solution: 11 Upvotes 970 Avg. Video Duration 12 min

Step 1, The time interval measured by the clock is given True value will be the mean of the readings So, True value = Mean = a = 1.25 + 1.24 + 1.27 + 1.21 + 1.28 5 = 1.25 Now, error in each reading will be given as Δ a 1 = 1.25 − 1.25 = 0 Δ a 2 = 1.25 − 1.24 = 0.01 Δ a 3 = 1.25 − 1.27 = − 0.02 Δ a 4 = 1.25 − 1.21 = 0.04 Δ a 5 = 1.25 − 1.28 = 0.03 Step 2, Now we will find the mean of errors Mean = Δ a = 0 + 0.01 + 0.02 + 0.04 + 0.03 5 = 0.05 Now relative error = Δ a m e a n a m e a n × 100 = 0.05 1.25 × 100 = 4 % Hence the relative error is 4% Q. Question 2 Two clocks A and B are shown in the Figure. Clock A has an hour and a minute hand, whereas clock B has an hour hand, minute hand as well as a second hand. Which of the following statement is correct for these clocks? (a) Time interval of 30 seconds can be measured by clock A (b) Time interval of 30 seconds cannot be measured by clock B (c) Time interval of 5 minutes can be measured by both A and B (d) Time interval of 4 minutes 10 seconds can be measured by clock A

Time intervals measured by a clock give the following readings: 1.25 s, 1.24 s, 1.27 s, 1.21 s, and 1.28 s. What is the percentage relative error of the observations? (1) 2 % (2) 4 % (3) 16 % (4) 1.6 % Units and Measurement Physics NEET Practice Questions, MCQs, Past Year Questions (PYQs), NCERT Questions, Question Bank, Class 11 and Class 12 Questions, and PDF solved with answers A calorie is a unit of heat (energy in transit) and it equals about \(4.2\) J where \(1\)J \(=1\)kg-m 2s -2. Suppose we employ a system of units in which the unit of mass equals \(\alpha\)kg the unit of length equals \(\beta\) m, and the unit of time is \(\gamma\)s then the magnitude of calories in terms of new units is: 1. \(4.2\alpha^\) Which of the following is the most precise device for measuring length? 1. A vernier calliper with 20 divisions on the sliding scale. 2. A screw gauge of pitch 1 mm and 100 divisions on the circular scale. 3. An optical instrument that can measure the length within a wavelength of light. 4. Both 1 and 2 A physical quantity \(P\) is related to four observables \(a,\) \(b,\) \(c,\) and \(d\) as follows; \(P=\frac.\) The percentage errors of measurement in \(a,\) \(b,\) \(c,\) and \(d\) are 1%, 3%, 4% and 2%, respectively. Then the percentage error in the quantity \(P\) is: 1. 12% 2. 13% 3. 14% 4. 15% A new unit of length is chosen such that the speed of light in the vacuum is unity. What is the distance between the Sun and the Earth in terms of the new unit if lig...