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

JEE Main 2023 (Online) 11th April Evening Shift Physics - Current Electricity Question 40 English

The current flowing through R$$_2$$ is :

A
$$\frac{1}{2} \mathrm{~A}$$
B
$$\frac{1}{3} \mathrm{~A}$$
C
$$\frac{1}{4} \mathrm{~A}$$
D
$$\frac{2}{3} \mathrm{~A}$$
2
JEE Main 2023 (Online) 11th April Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

A plane electromagnetic wave of frequency $$20 ~\mathrm{MHz}$$ propagates in free space along $$\mathrm{x}$$-direction. At a particular space and time, $$\overrightarrow{\mathrm{E}}=6.6 \hat{j} \mathrm{~V} / \mathrm{m}$$. What is $$\overrightarrow{\mathrm{B}}$$ at this point?

A
$$-2.2 \times 10^{-8} \hat{i} T$$
B
$$2.2 \times 10^{-8} \hat{i} T$$
C
$$2.2 \times 10^{-8} \hat{k} T$$
D
$$-2.2 \times 10^{-8} \hat{k} T$$
3
JEE Main 2023 (Online) 11th April Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

An electron is allowed to move with constant velocity along the axis of current carrying straight solenoid.

A. The electron will experience magnetic force along the axis of the solenoid.

B. The electron will not experience magnetic force.

C. The electron will continue to move along the axis of the solenoid.

D. The electron will be accelerated along the axis of the solenoid.

E. The electron will follow parabolic path-inside the solenoid.

Choose the correct answer from the options given below:

A
B, C and D only
B
B and C only
C
A and D only
D
B and E only
4
JEE Main 2023 (Online) 11th April Evening Shift
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language

A car P travelling at $$20 \mathrm{~ms}^{-1}$$ sounds its horn at a frequency of $$400 \mathrm{~Hz}$$. Another car $$\mathrm{Q}$$ is travelling behind the first car in the same direction with a velocity $$40 \mathrm{~ms}^{-1}$$. The frequency heard by the passenger of the car $$\mathrm{Q}$$ is approximately [Take, velocity of sound $$=360 \mathrm{~ms}^{-1}$$ ]

A
485 Hz
B
514 Hz
C
421 Hz
D
471 Hz
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