1
JEE Main 2023 (Online) 24th January Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

A long solenoid is formed by winding 70 turns cm$$^{-1}$$. If 2.0 A current flows, then the magnetic field produced inside the solenoid is ____________ ($$\mu_0=4\pi\times10^{-7}$$ TmA$$^{-1}$$)

A
$$88\times10^{-4}$$ T
B
$$1232\times10^{-4}$$ T
C
$$176\times10^{-4}$$ T
D
$$352\times10^{-4}$$ T
2
JEE Main 2023 (Online) 24th January Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

A cell of emf 90 V is connected across series combination of two resistors each of 100$$\Omega$$ resistance. A voltmeter of resistance 400$$\Omega$$ is used to measure the potential difference across each resistor. The reading of the voltmeter will be :

A
40 V
B
90 V
C
45 V
D
80 V
3
JEE Main 2023 (Online) 24th January Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language
An $$\alpha$$-particle, a proton and an electron have the same kinetic energy. Which one of the following is correct in case of their de-Broglie wavelength:
A
$${\lambda _\alpha } > {\lambda _p} < {\lambda _e}$$
B
$${\lambda _\alpha } > {\lambda _p} > {\lambda _e}$$
C
$${\lambda _\alpha } = {\lambda _p} = {\lambda _e}$$
D
$${\lambda _\alpha } < {\lambda _p} < {\lambda _e}$$
4
JEE Main 2023 (Online) 24th January Evening Shift
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language

Match List I with List II

List-I
List-II
A. AM Broadcast I. 88-108 MHz
B. FM Broadcast II. 540-1600 kHz
C. Television III. 3.7-4.2 GHz
D. Satellite Communication IV. 54MHz - 890MHz

Choose the correct answer from the options given below :

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