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JEE Physics

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Chapter 22

Experiment - Micrometer Screw Gauge - all with Video Answers

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Chapter Questions

00:56

Problem 2773

When the edge of the circular scale lies to the left of O mark on the main scale, when the stud and spindle touch each other, Then what will be the zero error?
(A) zero error is negative
(B) zero error is positive
(C) zero error does not exist
(D) zero correction is negative

Khoobchandra Agrawal
Khoobchandra Agrawal
Numerade Educator
01:07

Problem 2774

Whet the edge of the circular scale lies to the right of the $\mathrm{O}$ mark on the main scale, when the stud and the spindle touch each other, then what will be the zero error?
(A) zero correction is negative
(B) zero error is negative
(C) zero error does not exist
(D) zero correction is positive

Khoobchandra Agrawal
Khoobchandra Agrawal
Numerade Educator
01:22

Problem 2775

When the screw and stud touch each other, the edges of a certain screw gauge is on left of the $\mathrm{O}$ mark on the main scale and the $96^{\text {th }}$ division of the circular scale coincides with the circular line of graduation then what is the value of zero error?
(A) zero error $=+0.96 \mathrm{~mm}$
(B) zero error $=-0.96 \mathrm{~mm}$
(C) zero error $=+0.04 \mathrm{~mm}$
(D) zero error $=-0.04 \mathrm{~mm}$

Khoobchandra Agrawal
Khoobchandra Agrawal
Numerade Educator
01:04

Problem 2776

When the screw and stud touch each other, the edge of $a$ certain screw gauge is to the right of the $\mathrm{O}$ mark on the main scale and $5^{\text {th }}$ division of the circular scale coincides with the line of graduation, then what is the value of zero error?
(A) zero error $=+0.95 \mathrm{~mm}$
(B) zero error $=-0.95 \mathrm{~mm}$
(C) zero error $=+0.05 \mathrm{~mm}$
(D) zero error $=-0.05 \mathrm{~mm}$

Khoobchandra Agrawal
Khoobchandra Agrawal
Numerade Educator
01:10

Problem 2777

Screw gauge A has a pitch of $1 \mathrm{~mm}$ and 50 divis1on on its circular scale screw gauge $B$ has a pitch of $0.5 \mathrm{~mm}$ and 100 divisions on its circular scale. If $(\mathrm{L} \times \mathrm{C})$ is least count, then which posibility is true ? What is the parilrility?
(A) $2(\mathrm{~L} \times \mathrm{C})_{\mathrm{A}}=(\mathrm{L} \times \mathrm{C})_{\mathrm{B}}$
(B) $(\mathrm{L} \times \mathrm{C})_{\mathrm{A}}=4(\mathrm{~L} \times \mathrm{C})_{\mathrm{B}}$
(C) $(\mathrm{L} \times \mathrm{C})_{\mathrm{A}}=(\mathrm{L} \times \mathrm{C})_{\mathrm{B}}$
(D) $(\mathrm{L} \times \mathrm{C})_{\mathrm{A}}=2(\mathrm{~L} \times \mathrm{C})_{\mathrm{B}}$

Khoobchandra Agrawal
Khoobchandra Agrawal
Numerade Educator
00:53

Problem 2778

The screw gauge shown above has a zero error of $-0.02$ $\mathrm{mm}$ and 100 divisions on the circular scale. What is the diameter of wire?(A) $0.28 \mathrm{~mm}$
(B) $0.22 \mathrm{~mm}$
(C) $0.24 \mathrm{~mm}$
(D) $0.26 \mathrm{~mm}$

Khoobchandra Agrawal
Khoobchandra Agrawal
Numerade Educator
01:20

Problem 2779

The pitch of screw gauge is $1 \mathrm{~mm}$ and there are 100 divisions on the circular scale. What measuring the diameter of a wire, the linear scale reads, $1 \mathrm{~mm}$ and $47^{\text {th }}$ division on the circular scale coincides with the reference line. The length of the wire is $5.6 \mathrm{~cm}$. What will be the curved surface area (in $\mathrm{cm}^{2}$ ) of the wire in appropriate number of significant figures.
(A) $2.6 \mathrm{~cm}^{2}$
(B) $2.5848 \mathrm{~cm}^{2}$
(C) $2.585 \mathrm{~cm}^{2}$
(D) $2.5 \mathrm{~cm}^{2}$

Khoobchandra Agrawal
Khoobchandra Agrawal
Numerade Educator
01:13

Problem 2780

Match column $\mathrm{A}$ and $\mathrm{B}$Column-I $\quad$ Column-II
(a) $\mathrm{A}$
(p) Main scale
(b) $\mathrm{B}$
(q) circular scale
(c) $\mathrm{C}$
(r) stud
(d) D
(s) spindle
(e) $\mathrm{E}$
(t) Ratchet
(f) $\mathrm{F}$
(u) Thimble
(g) G
(v) Screen
(a) $\mathrm{a} \rightarrow \mathrm{r}, \mathrm{b} \rightarrow \mathrm{s}, \mathrm{c} \rightarrow \mathrm{v}, \mathrm{d} \rightarrow \mathrm{p}, \mathrm{e} \rightarrow \mathrm{q}, \mathrm{f} \rightarrow \mathrm{u}, \mathrm{g} \rightarrow \mathrm{t}$
(b) $\mathrm{a} \rightarrow \mathrm{u}, \mathrm{b} \rightarrow \mathrm{t}, \mathrm{c} \rightarrow \mathrm{v}, \mathrm{d} \rightarrow \mathrm{p}, \mathrm{e} \rightarrow \mathrm{q}, \mathrm{f} \rightarrow \mathrm{r}, \mathrm{g} \rightarrow \mathrm{s}$
(c) $\mathrm{a} \rightarrow \mathrm{v}, \mathrm{b} \rightarrow \mathrm{p}, \mathrm{c} \rightarrow \mathrm{r}, \mathrm{d} \rightarrow \mathrm{s}, \mathrm{e} \rightarrow \mathrm{t}, \mathrm{f} \rightarrow \mathrm{q}, \mathrm{g} \rightarrow \mathrm{u}$
(d) $\mathrm{a} \rightarrow \mathrm{p}, \mathrm{b} \rightarrow \mathrm{q}, \mathrm{e} \rightarrow \mathrm{u}, \mathrm{d} \rightarrow \mathrm{t}, \mathrm{e} \rightarrow \mathrm{r}, \mathrm{f} \rightarrow \mathrm{s}, \mathrm{g} \rightarrow \mathrm{v}$

Khoobchandra Agrawal
Khoobchandra Agrawal
Numerade Educator