MCQ
Vibration magnetometer before use, should be set
  • In magnetic meridian
  • B
    In geographical meridian
  • C
    Perpendicular to magnetic meridian
  • D
    In any position

Answer

Correct option: A.
In magnetic meridian

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

Two identical coaxial circular loops carry current each circulating in the clockwise direction. If the loops are approaching each other, then
When a weight of $10\ kg$ is suspended from a copper wire of length $3$ metres and diameter $0.\ mm$, its length increases by $2.4\ cm$. If the diameter of the wire is doubled, then the extension in its length will be
A highly conducting ring of radius $R$ is perpendicular to and concentric with the axis of a long solenoid as shown in fig. The ring has a narrow gap of width $d$ in its circumference. The solenoid has cross sectional area $A$ and a uniform internal field of magnitude $B$. Now beginning at $t=0$, the solenoid current is steadily increased to so that the field magnitude at any time $t$ is given by $B(t)=B+\alpha t$ where $\alpha>0$. Assuming that no charge can flow across the gap, the end of ring which has excess of positive charge and the magnitude of induced e.m.f. in the ring are respectively
Image
A particle of mass $0.3\ kg$ is subjected to a force $F=-k x$ with $k=15\ N / m$. What will be its initial acceleration if it is released from a point $20\ cm$ away from the origin
Four curves $A, B, C$ and $D$ are drawn in the adjoining figure for a given amount of gas. The curves which represent adiabatic and isothermal changes are
Image
A system is given $300$ calories of heat and it does $600$ joules of work. How much does the internal energy of the system change in this process$(J=4.18$ joules $/ \mathrm{cal})$
Two particles having position vectors $\overrightarrow{r_1}=(3 \hat{i}+5 \hat{j})$ metres and $\overrightarrow{r_2}=(-5 \hat{i}-3 \hat{j})$ metres are moving with velocities $\vec{v}_1=(4 \hat{i}+3 \hat{j}) \mathrm{m} / \mathrm{s}$ and $\vec{v}_2=(\alpha \hat{i}+7 \hat{j}) \mathrm{m} / \mathrm{s}$. If they collide after 2 seconds, the value of ' $\alpha$ ' is
An open tube is in resonance with string (frequency of vibration of tube is $n$ ). If tube is dipped in water so that $75 \%$ of length of tube is inside water, then the ratio of the frequency of tube to string now will be
If force and displacement of particle in direction of force are doubled. Work would be
Intensity level $200 \mathrm{~cm}$ from a source of sound is $80 \mathrm{~dB}$. If there is no loss of acoustic power in air and intensity of threshold hearing is $10^{-12} \mathrm{Wm}^{-2}$ then, what is the intensity level at a distance of 400 cm from source