1
JEE Main 2023 (Online) 1st February Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

Let $$\sigma$$ be the uniform surface charge density of two infinite thin plane sheets shown in figure. Then the electric fields in three different region $$E_{I}, E_{I I}$$ and $$E_{I I I}$$ are:

JEE Main 2023 (Online) 1st February Morning Shift Physics - Electrostatics Question 51 English

A
$$\vec{E}_{I}=0, \vec{E}_{I I}=\frac{\sigma}{\epsilon_{0}} \hat{n}, E_{I I I}=0$$
B
$$\vec{E}_{I}=\frac{\sigma}{2 \epsilon_{0}} \hat{n}, \vec{E}_{I I}=0, \vec{E}_{I I I}=\frac{\sigma}{2 \epsilon_{0}} \hat{n}$$
C
$$\vec{E}_{I}=-\frac{\sigma}{\epsilon_{0}} \hat{n}, \vec{E}_{I I}=0, \vec{E}_{I I I}=\frac{\sigma}{\epsilon_{0}} \hat{n}$$
D
$$\vec{E}_{I}=\frac{2 \sigma}{\epsilon_{0}} \hat{n}, \vec{E}_{I I}=0, \vec{E}_{I I I}=\frac{2 \sigma}{\epsilon_{0}} \hat{n}$$
2
JEE Main 2023 (Online) 1st February Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

'$$n$$' polarizing sheets are arranged such that each makes an angle $$45^{\circ}$$ with the preceeding sheet. An unpolarized light of intensity I is incident into this arrangement. The output intensity is found to be $$I / 64$$. The value of $$n$$ will be:

A
4
B
5
C
3
D
6
3
JEE Main 2023 (Online) 1st February Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

Match List - I with List - II :

List I List II
A. AC generator I. Presence of both L and C
B. Transformer II. Electromagnetic Induction
C. Resonance phenomenon to occur III. Quality factor
D. Sharpness of resonance IV. Mutual Induction

Choose the correct answer from the options given below :

A
A-II, B-I, C-III, D-IV
B
A-IV, B-III, C-I, D-II
C
A-II, B-IV, C-I, D-III
D
A-IV, B-II, C-I, D-III
4
JEE Main 2023 (Online) 1st February Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

Match List I with List II:

List I List II
A. Intrinsic semiconductor I. Fermi-level near the valence bond
B. n-type semiconductor II. Fermi-level in the middle of valence and conduction band.
C. p-type semiconductor III. Fermi-level near the conduction band
D. Metals IV. Fermi-level inside the conduction band

Choose the correct answer from the options given below :

A
A-III, B-I, C-II, D-IV
B
A-II, B-I, C-III, D-IV
C
A-I, B-II, C-III, D-IV
D
A-II, B-III, C-I, D-IV
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