NEET · Physics · STD 11 - 1. units,dimensions and measurement
A student measured the diameter of a small steel ball using a screw gauge of least count \(0.001\, cm.\) The main scale reading is \(5\, mm\) and zero of circular scale division coincides with \(25\) divisions above the reference level. If screw gauge has a zero error of \(-0.004 \,cm,\) the correct diameter of the ball is
- A \(0.521 \,cm\)
- B \(\;\)\(0.525\, cm\)
- C \(0.529\, cm\)
- D \(\;\) \(0.053\, cm\)
Answer & Solution
Correct Answer
(C) \(0.529\, cm\)
Step-by-step Solution
Detailed explanation
Diameter of the ball
\(= MSR \,+ \,CSR \times\) (Least count) \(- Zero\, error\)
\(= 5\ mm + 25 \times 0.001\ cm - (-0.004)\ cm\)
\(= 0.5\ cm + 25 \times 0.001\ cm - (-0.004)\ cm = 0.529\ cm.\)
\(= MSR \,+ \,CSR \times\) (Least count) \(- Zero\, error\)
\(= 5\ mm + 25 \times 0.001\ cm - (-0.004)\ cm\)
\(= 0.5\ cm + 25 \times 0.001\ cm - (-0.004)\ cm = 0.529\ cm.\)
See the Complete Solution
Get step-by-step explanations for this and 2.5 Lakh+ more JEE, NEET & CET questions.
- Unlock all solutions
- Practice the full chapter
- Track accuracy across PYQs
4.8 rated on Google Play · 14,000+ reviews
More questions from Physics
- The net magnetic flux through any closed surface isNEET 2023 Easy
- Ionized hydrogen atoms and \(\alpha\) -particles with same momenta enters perpendicular to a constant magnetic field \(B\). The ratio of their radii of their paths \(\mathrm{r}_{\mathrm{H}}: \mathrm{r}_{\alpha}\) will beNEET 2019 Medium
- A metallic rod of mass per unit length \(0.5\; kg\; m^{-1}\) is lying horizontally on a smooth inclined plane which makes an angle of \(30^o\) with the horizontal. The rod is not allowed to slide down by flowing a current through it when a magnetic field of induction \(0.25\; T\) is acting on it in the vertical direction. The current flowing in the rod to keep it stationary is.....\(A\)NEET 2018 Medium
- If the mass of the bob in a simple pendulum is increased to thrice its original mass and its length is made half its original length, then the new time period of oscillation is \(\frac{x}{2}\) times its original time period. Then the value of \(x\) is:NEET 2024 Medium
- Two gases \(A\) and \(B\) are filled at the same pressure in separate cylinders with movable pistons of radius \(r_A\) and \(r_B\), respectively. On supplying an equal amount of heat to both the systems reversibly under constant pressure, the pistons of gas \(A\) and \(B\) are displaced by 16 cm and 9 cm , respectively. If the change in their internal energy is the same, then the ratio \(\frac{r_A}{r_B}\) is equal toNEET 2025 Easy
- The angle of \(1^{\prime}\) (minute of arc) in radian is nearly equal toNEET 2020 Easy
More PYQs from NEET
- A body is executing simple harmonic motion with frequency \('n',\) the frequency of its potential energy is :NEET 2021 Medium
- A parallel plate capacitor of capacitance \(20\; \mu \mathrm{F}\) is being charged by a voltage source whose potential is changing at therate of \(3 \;\mathrm{V} / \mathrm{s}\). The conduction current through the connecting wires, and the displacement current through the plates of the capacitor, would be, respectivelyNEET 2019 Medium
- An unknown nucleus has a nuclear density of \(2.29 \times 10^{17} kg / m ^3\) and mass of \(19.926 \times 10^{-27} kg\). Its mass number A is approximately :
(Take \(R_0=1.2 \times 10^{-15} m ; 4 \pi=12.56\) )NEET 2026 Hard - The ratio of the distances travelled by a freely falling body in the \(1^{\text {st }}, 2^{\text {nd }}, 3^{\text {rd }}\) and \(4^{\text {th }}\) second :NEET 2022 Medium
- Match List-I with List-II.
List - I List - II A. Emphysema (I) Rapid spasms in muscle due to low Ca++ in body fluid B. Angina pectoris (II) Damaged alveolar walls and decreased respiratory surface C. Glomerulonephritis (III) Acute chest pain when not enough oxygen is reaching to heart muscle D. Tetany (IV) Inflammation of glomeruli of kidney
Choose the correct answer from the options given below :NEET 2025 Medium - The type of conservation in which the threatened species are taken out from their natural habitat and placed in special setting where they can be protected and given special care is calledNEET 2024 Medium