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Saturday, 10 October

JEE Main 2023 · PhysicsMultiple choiceDiagram basedEasyData or graph

JEE Main 11 April 2023, Shift 1, Physics Q36

Question 36 of 90 in this shift, Physics question 6 of 30, Section A.

As per the given graph, choose the correct representation for curve A and curve B. {Where XCX_C = reactance of pure capacitive circuit connected with A.C. source XLX_L = reactance of pure inductive circuit connected with A.C. source RR = impedance of pure resistive circuit connected with A.C. source. ZZ = Impedance of the LCR series circuit}

The figure, in words

Graph of Impedance (y-axis) vs f (Hz) (x-axis): Curve A is a decreasing hyperbola-like curve falling from high impedance at low f toward zero; Curve B is a straight line through the origin rising with f. The two curves intersect.
  1. (1)A=XC, B=XLA = X_C,\ B = X_LOfficial answer
  2. (2)A=XL, B=ZA = X_L,\ B = Z
  3. (3)A=XC, B=RA = X_C,\ B = R
  4. (4)A=XL, B=RA = X_L,\ B = R

Official answer

Option 1

NTA final key.

Chapter
Alternating Current
Topic
LCR Resonance
Idea tested
Impedance vs Frequency Curve

Same topic in other shifts

All LCR Resonance questions
  1. 5 Apr 2026, Shift 2 · Q48A series LCR circuit with R=20 ΩR=20\ \Omega, L=1.6L=1.6 H and C=40 μFC=40\ \mu\mathrm{F} is connected to a variable frequency a.c. source. The…EasyNumerical value
  2. 6 Apr 2024, Shift 2 · Q59For a given series LCR circuit it is found that maximum current is drawn when value of variable capacitance is 2.5 nF. If resistance of…EasyNumerical value
  3. 8 Apr 2024, Shift 1 · Q50A LCR circuit is at resonance for a capacitor C, inductance L and resistance R. Now the value of resistance is halved keeping all other…EasySingle correct
  4. 29 Jan 2024, Shift 1 · Q43A capacitor of capacitance 100 μ100\ \muF is charged to a potential of 12 V and connected to a 6.4 mH inductor to produce oscillations. The…EasySingle correct
  5. 8 Apr 2023, Shift 2 · Q58A series combination of resistor of resistance 100 Ω\Omega, inductor of inductance 1 H and capacitor of capacitance 6.25 μ\muF is…EasyNumerical value
  6. 25 Jul 2022, Shift 1 · Q42To increase the resonant frequency in series LCR circuit,EasySingle correct

Question text from the official JEE Main paper published by NTA; answer from the final answer key. Chapter, topic and idea tags, difficulty and skill are Lumi’s. This question needs a figure we do not reproduce; it is described in words above. Lumi analyses 42 of the 174 JEE Main shifts held from 2017 to 2026.