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MCQ. 19. The box is then rotated through 90 o position on the horizontal circular scale. Here the needle and vertical scale are in a plane perpendicular to the magnetic meridian. The true meridians passing through different points on the earth’s surface are not parallel, but converge towards the poles. Chapter 12: Magnetism - Exercises [Page 227], Balbharati Physics 11th Standard Maharashtra State Board, CBSE Previous Year Question Paper With Solution for Class 12 Arts, CBSE Previous Year Question Paper With Solution for Class 12 Commerce, CBSE Previous Year Question Paper With Solution for Class 12 Science, CBSE Previous Year Question Paper With Solution for Class 10, Maharashtra State Board Previous Year Question Paper With Solution for Class 12 Arts, Maharashtra State Board Previous Year Question Paper With Solution for Class 12 Commerce, Maharashtra State Board Previous Year Question Paper With Solution for Class 12 Science, Maharashtra State Board Previous Year Question Paper With Solution for Class 10, CISCE ICSE / ISC Board Previous Year Question Paper With Solution for Class 12 Arts, CISCE ICSE / ISC Board Previous Year Question Paper With Solution for Class 12 Commerce, CISCE ICSE / ISC Board Previous Year Question Paper With Solution for Class 12 Science, CISCE ICSE / ISC Board Previous Year Question Paper With Solution for Class 10, HSC Science (Electronics) 11th Maharashtra State Board, HSC Science (Computer Science) 11th Maharashtra State Board, HSC Science (General) 11th Maharashtra State Board. Important Solutions 17. Magnetic meridian is the plane . Completing the CAPTCHA proves you are a human and gives you temporary access to the web property. The magnetometer box is rotated so that the pointer reads 0° – 0°. A dip needle vibrates in the vertical plane perpendicular to the magnetic meridian. For a plane perpendicular to magnetic meridian $\alpha=\frac{\pi}{2}$ $\therefore \tan \theta^{\prime}=\infty \quad$ so $\quad \theta^{\prime}=\frac{\pi}{2}$ So in a plane … Maharashtra State Board HSC Science (Electronics) 11th. A dip needle vibrates in the vertical plane perpendicular to the magnetic meridian. True meridian through a point is the line in which a plane, thus passes through the true north and south poles, intersects with the surface of the earth. A meridian is any direction such as true meridian, magnetic meridian and arbitrary meridian. When a magnetic needle is suspended freely in the air, it always points in the north-south direction free form all other attracting forces. X and y axis) through which the geometric axis of earth passes. Magnetic Meridian : A vertical plane passing through the magnetic axis of a freely suspended magnet is called magnetic meridian. For a vertical plane other than magnetic meridian $\alpha>0$ or $\cos \alpha<1$ so $\theta^{\prime}>\theta$ In a vertical plane other than magnetic meridian angle of dip is more than in magnetic meridian. A magnetic meridian lies parallel with the magnetic lines of force of the earth. The time period of vibration is found to be 2 second. As we move north from the equator, the magnetic field changes direction and dips down. The same needle is then allowed to vibrate in the horizontal plane and the time period is again found to be 2 sec. Check Answer and Solution for above questio The angle between the geographic and the magnetic meridian planes is called the magnetic declination. Magnetic Equator : An imaginary line, right bisecting the effective length of a magnet is called magnetic equator. A magnetic compass needle oscillates 30 times per minute at a place where the dip is 45° and 40 times per minute where the dip is 30º. True and Magnetic Meridian Magnetic Meridian- it is a fixed line of reference which line parallel with the magnetic lines of force of the earth. Please enable Cookies and reload the page. It is a line on the earth’s surface approximating a great circle passing through the north and south magnetic poles. 0 votes. (ii) It is a vertical plane at any place which passing through axis of free suspended bar magnet or magetic needle. You may need to download version 2.0 now from the Chrome Web Store. Performance & security by Cloudflare, Please complete the security check to access. 1 answer. Advertisement Remove all ads. If that pen is geometric axis of earth,the book is its meridian. Thus the coil remains in the magnetic meridian. It thus passes through the true north and south. Concept Notes & Videos 308. The magnetic meridian at any point, is the direction indicated by a freely suspended (A) Magnetic needle (B) And properly balanced magnetic needle (C) Properly balanced and uninfluenced by local attractive force (D) Magnetic needle over an iron pivot Answer: Option C Question No. perpendicular to the magnetic axis of Earth, perpendicular to geographic axis of Earth, passing through the magnetic axis of Earth. On the dayside of Earth the magnetic field of the planet terminates at a distance of about 10 R e (where R e is Earth’s equatorial radius of about 6,378 kilometres). A circle described by the intersection of the surface of the earth with the plane passing through the centre of the earth is known as great circle. Florida scientist: Government is retaliating against me. The angle of Dip or Magnetic Inclination; Magnetic Declination. Question Bank Solutions 4570. asked Aug 28, 2019 in Science by aditya23 (-2,145 points) magnetic effects of electric current. • The earth acts very much like a bar magnet with a north magnetic pole located considerably south of the north pole defined by the earth’s rotational axis. A magnetic needle free to rotate in a vertical plane parallel to the magnetic meridian has its north tip down at 60° with the horizontal. Magnetic meridian: The imaginary vertical plane passing through the magnetic axis of the geomagnetic is called magnetic meridian.

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