Question
Assertion  :   For a perfectly diamagnetic substance permeability is always one.
Reason       : The ability of a material of permit the passage of magnetic lines of force through it is called magnetic permeability.(a) If both assertion and reason are true and the reason is the correct explanation of the assertion.(b) If both assertion and reason are true but reason is not the correct explanation of the assertion.(c) If assertion is true but reason is false.(d) If assertion is false but reason is true.
 
 
 
 

Answer

(d) If assertion is false but reason is true.

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

A point object O is placed on the principal axis of a convex lens of focal length 20 cm at a distance of 40 cm to the left of it. The diameter of the lens is 10 cm. If the eye is placed 60 cm to the right of the lens at a distance h below the principal axis, then the maximum value of h to see the image will be(a) 0 (b) 5 cm(c) 2.5 cm(d) 10 cm
       
The conductivity of a superconductor is(a) Infinite(b) Very large(c) Very small(d) Zero
       
Magnets $A$ and $B$ are geometrically similar but the magnetic moment of $A$ is twice that of $B$. If $T_1$ and $T_2$ be the time periods of the oscillation when their like poles and unlike poles are kept together respectively, then $\frac{T_1}{T_2}$ will be 
The ratio of radii of nuclei $13^{\mathrm{Al}^{27}}$ and $52^{\mathrm{X}^{\mathrm{A}}}$ is $3: 5$.The number of neutrons in the nuclei of $X$ will be
A potentiometer having the potential gradient of 2 mV/cm is used to measure the difference of potential across a resistance of 10 ohm. If a length of 50 cm of the potentiometer wire is required to get the null point, the current passing through the 10 ohm resistor is (in mA)(a) 1(b) 2(c) 5(d) 10
       
 Which waves are used by artificial satellites for communication?
A powerful magnet attracts:
A particle moves with a constant velocity parallel to the X-axis. Its angular momentum with respect to the origin:
  1. Is zero.
  2. Remains constant.
  3. Goes on Increasing.
  4. Goes on decreasing.
The distance between the ends of the wings of an airplane is $50m$. It is flying in a horizontal plane at a speed of $360\ Km$ / hour.The vertical component of earth's magnetic field at that place is $2.0 \times 10^{-4}Wb/ m^2,$ then the potential difference induced between the ends of the wings will be
A thin insulator rod is placed between two unlike point charges $+q_1$​ and $q_2​$. For this situation tick the correct alternative $(s):$​​​​​​​