1
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
2
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
$${\lambda _\alpha } < {\lambda _p} < {\lambda _e}$$
3
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
4
JEE Main 2023 (Online) 24th January Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R.

Assertion A : A pendulum clock when taken to Mount Everest becomes fast.

Reason R : The value of g (acceleration due to gravity) is less at Mount Everest than its value on the surface of earth.

In the light of the above statements, choose the most appropriate answer from the options given below

A
Both A and R are correct but R is NOT the correct explanation of A
B
A is correct but R is not correct
C
Both A and R are correct and R is the correct explanation of A
D
A is not correct but R is correct
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