1
JEE Main 2022 (Online) 28th June Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

For using a multimeter to identify diode from electrical components, choose the correct statement out of the following about the diode :

A
It is two terminal device which conducts current in both directions.
B
It is two terminal device which conducts current in one direction only.
C
It does not conduct current gives an initial deflection which decays to zero.
D
It is three terminal device which conducts current in one direction only between central terminal and either of the remaining two terminals
2
JEE Main 2022 (Online) 28th June Morning Shift
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language

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

Assertion A : n-p-n transistor permits more current than a p-n-p transistor.

Reason R : Electrons have greater mobility as a charge carrier.

Choose the correct answer from the options given below :

A
Both A and R are true, and R is correct explanation of A.
B
Both A and R are true but R is NOT the correct explanation of A.
C
A is true but R is false.
D
A is false but R is true.
3
JEE Main 2022 (Online) 28th June Morning Shift
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language

Match List-I with List-II

List-I List-II
(A) Television signal (I) 03 KHz
(B) Radio signal (II) 20 KHz
(C) High Quality Music (III) 02 MHz
(D) Human speech (IV) 06 MHz

A
A-I, B-II, C-III, D-IV
B
A-IV, B-III, C-I, D-II
C
A-IV, B-III, C-II, D-I
D
A-I, B-II, C-IV, D-III
4
JEE Main 2022 (Online) 28th June Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

The velocity of sound in a gas, in which two wavelengths 4.08 m and 4.16 m produce 40 beats in 12s, will be :

A
282.8 ms$$-$$1
B
175.5 ms$$-$$1
C
353.6 ms$$-$$1
D
707.2 ms$$-$$1
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