1
JEE Main 2023 (Online) 11th April Morning Shift
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language

Two radioactive elements A and B initially have same number of atoms. The half life of A is same as the average life of B. If $$\lambda_{A}$$ and $$\lambda_{B}$$ are decay constants of A and B respectively, then choose the correct relation from the given options.

A
$$\lambda_{\mathrm{A}}=\lambda_{\mathrm{B}} \ln 2$$
B
$$\lambda_{\mathrm{A}} \ln 2=\lambda_{\mathrm{B}}$$
C
$$\lambda_{\mathrm{A}}=2 \lambda_{\mathrm{B}}$$
D
$$\lambda_{\mathrm{A}}=\lambda_{\mathrm{B}}$$
2
JEE Main 2023 (Online) 11th April Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

The logic performed by the circuit shown in figure is equivalent to :

JEE Main 2023 (Online) 11th April Morning Shift Physics - Semiconductor Question 18 English

A
NAND
B
AND
C
OR
D
NOR
3
JEE Main 2023 (Online) 11th April Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

A coin placed on a rotating table just slips when it is placed at a distance of $$1 \mathrm{~cm}$$ from the center. If the angular velocity of the table in halved, it will just slip when placed at a distance of _________ from the centre :

A
1 cm
B
8 cm
C
4 cm
D
2 cm
4
JEE Main 2023 (Online) 11th April Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

The variation of kinetic energy (KE) of a particle executing simple harmonic motion with the displacement $$(x)$$ starting from mean position to extreme position (A) is given by

A
JEE Main 2023 (Online) 11th April Morning Shift Physics - Simple Harmonic Motion Question 15 English Option 1
B
JEE Main 2023 (Online) 11th April Morning Shift Physics - Simple Harmonic Motion Question 15 English Option 2
C
JEE Main 2023 (Online) 11th April Morning Shift Physics - Simple Harmonic Motion Question 15 English Option 3
D
JEE Main 2023 (Online) 11th April Morning Shift Physics - Simple Harmonic Motion Question 15 English Option 4
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