JEE Main 2022 · PhysicsMultiple choiceOtherMediumCalculation
JEE Main 29 July 2022, Shift 1, Physics Q50
Question 50 of 90 in this shift, Physics question 20 of 30, Section A.
In an experiment to find out the diameter of wire using screw gauge, the following observations were noted :
(A) Screw moves 0.5 mm on main scale in one complete rotation
(B) Total divisions on circular scale = 50
(C) Main scale reading is 2.5 mm
(D) 45 division of circular scale is in the pitch line
(E) Instrument has 0.03 mm negative error
Then the diameter of wire is :
The figure, in words
Screw gauge drawn as a U-shaped frame with studs P and Q, screw thread, and circular scale showing 45 at the reference line.- (1)2.92 mm
- (2)2.54 mm
- (3)2.98 mmOfficial answer
- (4)3.45 mm
Official answer
Option 3
NTA final key.
- Chapter
- Units and Measurements
- Topic
- No close match in our taxonomy
- Idea tested
- No close match in our taxonomy