MH-CET Previous Year Question Paper 2022

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MHT-CET PHYSICS Paper Shift-II with Solutions

MHT-CET Chemistry Paper Shift-II with Solutions

MHT-CET Mathematics Paper Shift-II with Solutions

11TH AUGUST (SHIFT – 2) Solutions

Q.1 ) The magnetic susceptibility of the material of a rod is 349 and permeability of vacuum μ_0​ is 4π ×10^–7 SI units .Absolute permeability of the material of the rod in SI units

(a) 4400 × 10^–7 (b) 4200 × 10^–7
(c) 4800 × 10^–7 (d) 4600 × 10^–7

Ans : a

Solutions :

The relative permeability μ_R = 1 + χ
Absolute permeability μ = μ_Rμ₀ = μ₀(1+ χ )
= 4π × 10^–7 [1 + 349]
= 350 × 4 × 3.142 × 10^–7
= 4400 × 10^–7 SI units

Q.2 ) The magnetic flux through a coil of resistance ‘R’ changes by an amount ‘Δϕ‘ in time ‘Δt’. The total quantity of induced electric charge ‘Q’ is

 a)   -\frac{\Delta \phi}{ Δt} +R      

 b )   \frac{\Delta \phi}{ Δt} \times R      

 c )   \frac{\Delta \phi}{ R} 

 d )   \frac{\Delta \phi}{ Δt} 

Ans : C

Solutions :

By \, faraday \, law, \\  e=\ \frac{\Delta \phi}{ Δt}  \\  
\, \\  i = \frac{e}{ R} =  \frac{\Delta \phi}{ R\Delta t}  \\ \, \\ \, (i)\Delta t =\frac{ \Delta \phi}{R}  \quad-(1) \\ \, \\but \, i =   \frac{\Delta Q}{ Δt}   ,\, { Δt}  = i{ Δt}   
\\ \,\\
from \,eq(1) ,  \Delta Q=   \frac{\Delta \phi}{ R}  
\\ \, \\
Q =  \frac{\Delta \phi}{ R}