20 solutions available
Question 17The S.I. unit of pressure is:Kg m-2s-2Kg m-1s-2Kg m2Kg ms-2
Question 16Complete the following —1 nano second = ________s1 µs = _______s1 mean solar day = ________s1 year = ________s
Question 18Write the derived units of the following —SpeedForceWorkPressure
Question 19How are the following derived units related to the fundamental units?NewtonWattJoulePascal
Question 20Name the physical quantities related to the following units —km2newtonjoulepascalwatt
Question 2A vernier has 10 divisions and they are equal to 9 divisions of main scale in length. If the main scale is calibrated in mm, what is its...
Question 10The thimble of a screw gauge has 50 divisions. The spindle advances 1 mm when the screw is turned through two revolutions.(i) What is the...
Question 11The pitch of a screw gauge is 1 mm and its circular scale has 100 divisions. In measurement of the diameter of a wire, the main scale...
Question 12When a screw gauge of least count 0.01 mm is used to measure the diameter of a wire, the reading on the sleeve is found to be 1 mm and the...
Question 13A screw gauge has 50 divisions on its circular scale and its screw moves by 1 mm on turning it by two rotations. When the flat end of the...
Question 14Figure below shows the reading obtained while measuring the diameter of a wire with a screw gauge. The screw advances by 1 division on...
Question 15A screw has a pitch equal to 0.5 mm. What should be the number of division on its head so as to read correct up to 0.001mm with its help?
Question 1How does the time period (T) of a simple pendulum depend on its length (l) ? Draw a graph showing the variation of T2 with l. How will you...
Question 1(viii)The length of a simple pendulum is made one-fourth. Its time period becomes —four timesone-fourthdoublehalf
Question 3A seconds' pendulum is taken to a place where acceleration due to gravity falls to one forth. How is the time period of the pendulum...
Question 5Compare the time periods of two pendulums of length 1m and 9m.
Question 6A pendulum completes 2 oscillations in 5s.(a) What is its time period?(b) If g = 9.8 ms-2, find its length.
Question 7The time periods of two simple pendulums at a place are in the ratio 2:1. What will be the ratio of their lengths ?
Question 9How much time does the bob of a seconds' pendulum take to move from one extreme of its oscillation to the other extreme?
Question 4How is the time period of a simple pendulum affected, if at all, in the following situations:(a) The length is made four times,(b) The...