X Physics Unit-1 MEASUREMENT OF LENGTH

X PHYSICS

UNIT-I

MEASUREMENT OF LENGTH


1. Screw gauge works on the principle of _______________.
2. Screw gauge consists of _____________ scale and _____________ scale.
3. Pitch of the screw P = _____________.
4. Least count of screw gauge (L.C) = _____________.
5. If the zeroth division of the head scale is below the index line of the pitch scale, the error is said to be _____________ and the correction is _____________.
6. If the zeroth division of the head scale is above the index line of the pitch scale, the error is said to be _____________ and the correction is _____________.
7. For the least count of a screw gauge whose head scale is divided into 200 divisions moves 5mm. distance when the head is rotated through 5 revolutions _____________.
8. The head of screw is divided into 50 divisions. It advances 1mm when a screw is turned through 2 rotations. The least count of (L.C) is _____________.
9. The value of pitch of the screw gauge is X. Then number of divisions on the head scale is n. The least count is _____________.
10. The distance between two adjacent threads on the distance traveled by the tip of the screw in one complete revolution of the head scale is called the _____________.
11. For a screw gauge the pitch of the screw is 0.5 mm and the number of head scale divisions are 100. Then least count is _____________.
12. The least count of the screw gauge is 0.01 mm. Pitch of the screw is 1mm. The number of divisions on the scale divisions = _____________.
13. The thickness of the glass plate is measured by _____________.
14. A screw gauge consists of a _____________ shaped metallic frame.
15. The scale marked on the index line of a screw gauge is called _____________.
16. The divisions on the tapered part of the barrel of the screw gauge is called _____________.
17. A screw gauge having a positive zero of 6 divisions and least count 0.01mm is used to measure the thickness of a wire. If pitch scale reading and head scale reading are 2 mm and 18 divisions respectively thickness of the wire is _____________.
18. In a screw gauge the diameter of the lead shot is _____________.
19. If the zeroth division of the head scale does not coincide with the index line the screw gauge has _____________.
20 In a screw the zeroth division of the head scale is above the index line, then the error is _____________.




X PHYSICS(key)

UNIT-I

MEASUREMENT OF LENGTH

(1) a screw in a nut (2) pitch, head (3) Distance traveled by the screw/No.of complete rotations made (4) Pitch of the screw/No.of head scale divisions (5) positive, negative (6) negative, positive (7) 0.005 mm (8) 0.01 mm (9) X/n (10) pitch of the screw (11) 0.005 mm (12) 100 (13) Screw gauge (14) U (15) pitch scale (16) head scale (17) 2.12 mm (18) P.S.R.+ H.S.R. × L.C (19) zero error (20) negative.