A balance has pans of unequal weight but arms are of equal length. The weight of body in one pan is measured as 8 kg and when pans are interchanged the weight of body measured is 18 kg. The true weight of body is -
In given screw gauge, if pitch is 1 mm and circular scale has 100 divisions. When nothing is put between the jaws A and B which just closed then 13 divisions of C.S. are below the zero of reference line on linear or main scale. When a wire is placed between the jaws two linear scale divisions are clearly visible while 73 divisions on circular scale coincide with reference line. The error in this question is -
Pitch of screw gauge is 1 mm. There are 100 divisions on circular scale. While measuring diameter of wire the linear scale reads 1 mm and 45th division of circular scale coincides with reference line of main scale. Length of wire is
0 cm measured by metre scale. The surface area of wire to correct significant figure is -
While using travelling microscope in an experiment one find that one main scale division length is 1 mm and 10 VSD = 9 MSD. When this microscope is focused over a glass slab which is placed over a spot. Then which of the reading is correctly written in terms of significant figure -
An object is weighed on a balance whose pans are not equal in masses when placed in the left pan, the object appears to weigh 10.30g but when placed in the right pan, it appears to weigh 12.62g. What is the correct mass of the object?
The pitch of a screw gauge is 0.5 mm and it has 50 divisions on circular scale. When the studs are in contact, 46th division of circular scale coincides with reference line. When a wire is kept between the studs the linear scale reads 2 division and 20th division of circular coincides with the reference line. The correct statement is -
The pitch of a screw guage is 1mm and there are 100 divisions on its circular scale. During the process of finding the zero error, a student finds that the zero of the circular scale lies 4 divisions below the reference line. When an experimental steel wire is placed between the studs two main scale divisions are clearly visible and 57 divisions on the circular scale are observed. The diameter of the wire is-
A balance has pans of unequal weight but arms are of equal length. The weight of body in one pan is measured as 8 kg and when pans are interchanged the weight of body measured is 18 kg. The true weight of body is -
To measure the length of cylinder, a student uses the vernier calipers, whose main scale reads in millimeter and its vernier is divided into 10 divisions which coincide with 9 divisions of the main scale. He observed that when the two jaws of the instrument touch each other the eighth division of the vernier scale coincides with any one of the mains scale division and the zero of the vernier lies to the right of the zero of main scale. When he placed a cylinder tightly along its length between the two jaws the zero of the vernier scale lies slightly to the left of 42 mm and the fourth vernier division coincides with a scale division. The length of the cylinder measured by the student is-
