1
JEE Main 2023 (Online) 8th April Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

Two projectiles A and B are thrown with initial velocities of $$40 \mathrm{~m} / \mathrm{s}$$ and $$60 \mathrm{~m} / \mathrm{s}$$ at angles $$30^{\circ}$$ and $$60^{\circ}$$ with the horizontal respectively. The ratio of their ranges respectively is $$\left(g=10 \mathrm{~m} / \mathrm{s}^{2}\right)$$

A
$$4: 9$$
B
$$2: \sqrt{3}$$
C
$$\sqrt{3}: 2$$
D
$$1: 1$$
2
JEE Main 2023 (Online) 8th April Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

For a nucleus $${ }_{\mathrm{A}}^{\mathrm{A}} \mathrm{X}$$ having mass number $$\mathrm{A}$$ and atomic number $$\mathrm{Z}$$

A. The surface energy per nucleon $$\left(b_{\mathrm{s}}\right)=-a_{1} A^{2 / 3}$$.

B. The Coulomb contribution to the binding energy $$\mathrm{b}_{\mathrm{c}}=-a_{2} \frac{Z(Z-1)}{A^{4 / 3}}$$

C. The volume energy $$\mathrm{b}_{\mathrm{v}}=a_{3} A$$

D. Decrease in the binding energy is proportional to surface area.

E. While estimating the surface energy, it is assumed that each nucleon interacts with 12 nucleons. ( $$a_{1}, a_{2}$$ and $$a_{3}$$ are constants)

Choose the most appropriate answer from the options given below:

A
C, D only
B
B, C, E only
C
B, C only
D
A, B, C, D only
3
JEE Main 2023 (Online) 8th April Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

An aluminium rod with Young's modulus $$Y=7.0 \times 10^{10} \mathrm{~N} / \mathrm{m}^{2}$$ undergoes elastic strain of $$0.04 \%$$. The energy per unit volume stored in the rod in SI unit is:

A
5600
B
2800
C
11200
D
8400
4
JEE Main 2023 (Online) 8th April Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

For the logic circuit shown, the output waveform at $$\mathrm{Y}$$ is:

JEE Main 2023 (Online) 8th April Morning Shift Physics - Semiconductor Question 44 English

A
JEE Main 2023 (Online) 8th April Morning Shift Physics - Semiconductor Question 44 English Option 1
B
JEE Main 2023 (Online) 8th April Morning Shift Physics - Semiconductor Question 44 English Option 2
C
JEE Main 2023 (Online) 8th April Morning Shift Physics - Semiconductor Question 44 English Option 3
D
JEE Main 2023 (Online) 8th April Morning Shift Physics - Semiconductor Question 44 English Option 4
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