- 1(current)
Q. No.
1. \(2~\text{mA}\)
2. \(20~\mu\text{A}\)
3. \(1~\text{mA}\)
4. \(40~\mu\text{A}\)
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyMagnetic materials used for making permanent magnets (\(\text{P}\)) and magnets in a transformer (\(\text{T}\)) have different properties of the following, which property best matches for the type of magnet required?
| 1. | \(\text{T}\) : Large retentivity, small coercivity |
| 2. | \(\text{P}\) : Small retentivity, large coercivity |
| 3. | \(\text{T}\) : Large retentivity, large coercivity |
| 4. | \(\text{P}\) : Large retentivity, large coercivity |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyA perfectly diamagnetic sphere has a small spherical cavity at its centre, which is filled with a paramagnetic substance. The whole system is placed in a uniform magnetic field \(\vec{B}\). Then the field inside the paramagnetic substance is:
| 1. | Zero |
| 2. | \(\vec{B}\) |
| 3. | much larger than \(|\vec{B}|\) and parallel to \(\vec{B}\) |
| 4. | much larger than \(|\vec{B}|\) and opposite to \(\vec{B}\) |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyA soft ferromagnetic material is placed in an external magnetic field. The magnetic domains:
| 1. | increase in size but no change in orientation |
| 2. | have no relation with an external magnetic field |
| 3. | decrease in size and change its orientation |
| 4. | may increase or decrease in size and change its orientation |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyIn a ferromagnetic material, below the curie temperature, a domain is defined as:
| 1. | a macroscopic region with zero magnetization. |
| 2. | a macroscopic region with consecutive magnetic dipoles oriented in opposite directions. |
| 3. | a macroscopic region with randomly oriented magnetic dipoles. |
| 4. | a macroscopic region with saturation magnetization. |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology(Permeability of free space, \(\mu_{0}=4\pi \times 10^{-7}\) Wb/A-m )
1. \(4 \pi \times 10^{-7} \)
2. \( 4 \pi \times 10^{-4} \)
3. \( 4 \pi \times 10^{-5} \)
4. \( 4 \pi \times 10^{-6}\)
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology| Statement I: | For diamagnetic substances, \(-1 \leq \chi <0 ,\) where \(\chi\) is the magnetic susceptibility. |
| Statement II: | Diamagnetic substances, when placed in an external magnetic field, tend to move from the stronger to the weaker part of the field. |
| 1. | Both Statement I and Statement II are correct. |
| 2. | Both Statement I and Statement II are incorrect. |
| 3. | Statement I is correct, and Statement II is incorrect. |
| 4. | Statement I is incorrect, and Statement II is correct. |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology| List - I | List - II | ||
| A | \(Y= \)magnetic susceptibility \(X=\) magnetizing field |
I |  |
| B | \(Y= \) magnetic field \(X=\) distance from centre of a current carrying wire for \(x<a\) (where \(a=\) radius of wire) |
II |  |
| C | \(Y= \) magnetic field \(X=\) distance from centre of a current carrying wire for \(x>a\) (where \(a=\) radius of wire) |
III |  |
| D | \(Y= \) magnetic field inside solenoid \(X=\) distance from centre |
IV |  |
Choose the correct answer from the options given below :
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyA. align themselves along the directions of external magnetic field.
B. attract strongly towards external magnetic field.
C. has susceptibility little more than zero.
D. move from a region of strong magnetic field to weak magnetic field.
Choose the most appropriate answer from the options given below:
1. A, C only
2. B, D only
3. A, B, C, D
4. A, B, C only
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology- 1(current)
Q. No.
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