Download App

5. Magnetism and matter — Physics STD 12 Science — Question

CBSE BoardEnglish MediumSTD 12 SciencePhysics5. Magnetism and matter1 Mark
MCQ
Two identical bar magnets are held perpendicular to each other with a certain separation, as shown below. The area around the magnets is divided into four zones. Given that there is a neutral point it is located in
  • ✓
    zone $I$
  • B
    zone $II$
  • C
    zone $III$
  • D
    zone $IV$
✓

Answer

Correct option: A.
zone $I$
a
(a)

Neutral point appears in region in which fields of magnets are in opposite directions.

From above figure, we can conclude that magnetic fields cancel each other in region $I$ only.

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

Explore more

More "M.C.Q (1 Marks)" from 5. Magnetism and matter→5. Magnetism and matter — all question types→Physics STD 12 Science question papers→CBSE Board STD 12 Science question papers→CBSE Board question paper generator→

Similar questions

In a Young's double slit experiment, the intensity of light at each slit is $I_0$. Interference pattern is observed along a direction parallel to the line $S_1 S_2$ on screen $S$. The minimum, maximum and the intensity averaged over the entire screen are respectively.
→
A double convex lens has focal length $25\; \mathrm{cm}$. The radius of curvature of one of the surfaces is double of the other. Find the radii If the refractive index of the material of the lens is $1.5 $
→
Two metallic rings $\mathrm{A}$ and $\mathrm{B}$, identical in shape and size but having different resistivities $\rho_A$ and $\rho_B$, are kept on top of two identical solenoids as shown in the figure. When current $I$ is switched on in both the solenoids in identical manner, the rings $\mathrm{A}$ and $\mathrm{B}$ jump to heights $h_A$ and $h_B$, respectively, with $h_A>h_B$. The possible relation$(s)$ between their resistivities and their masses $m_A$ and $m_B$ is(are)

$(A)$ $\rho_A>\rho_B$ and $m_A=m_B$

$(B)$ $\rho_A<\rho_B$ and $m_A=m_B$

$(C)$ $\rho_A>\rho_B$ and $m_A > m_B$

$(D)$ $\rho_A<\rho_B$ and $m_A < m_B$

→
A generator at a utility company produces $100\, A$ of current at $4000\, V$. The voltage is stepped upto $240000\, V$ by a transformer before it is sent on a high voltage transmission line. The current in transmission line is.......$A$
→
The maximum wavelength of radiation that can produce photoelectric effect in a certain metal is 200 nm. The maximum kinetic energy acquired by electron due to radiation of wavelength 100 nm will be
→
Four lowest energy levels of $H-$atom are shown in the figure. The number of possible emission lines would be
→
Which of the following quantities do not depend on the choice of zero potential or zero potential energy?
→
In the figure, the inner (shaded) region $A$ represents a sphere of radius $r_A=1$, within which the electrostatic charge density varies with the radial distance $r$ from the center as $\rho_A=k r$, where $k$ is positive. In the spherical shell $B$ of outer radius $r_B$, the electrostatic charge density varies as $\rho_{\bar{B}}=\frac{2 k}{r}$. Assume that dimensions are taken care of. All physical quantities are in their $SI$ units.

Which of the following statement($s$) is(are) correct?

→
Two point charges $ + 3\,\mu C$ and $ + 8\,\mu C$ repel each other with a force of $40\,N$. If a charge of $ - 5\,\mu C$ is added to each of them, then the force between them will become....$N$
→
Earth is the source of $........$?
→