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Optics — JEE Main Physics MCQs with Solutions
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Sample questions with solutions
Q1 — medium · theory
In an a.c. circuit, voltage and current are (1) 1.38 A and 1.38 A
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q2 — medium · theory
Given below are two statements : 22-4. ALTERNATING CURRENT
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q3 — medium · theory
(3) 24-2. (1) ANSWER KEY 24-4. (4) 23-1. (3)
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q4 — medium · theory
(2) 21-2. (3) 24-3. (2) 21-4. (2) 21-5. (4)
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q5 — medium · numerical
Parg = V I cos(������) 22-3. at r, XC = XL
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q6 — medium · theory
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q7 — medium · theory
22
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q8 — medium · numerical
at t = 2, ������ = 16 V
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q9 — medium · theory
given by : (2) 14.3 A and 143 A
A. 13.8 A and 13.8 A ✓ Correct
B. 5W (2) 10 W connected with A.C. source
C. 2.5 W (4) 25 W
D. A = XC, B = R (2) A = XL, B = Z
Q10 — medium · numerical
In a series LR circuit XL = R and power factor
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q11 — medium · theory
(1) 22-1. (3) 22-3. (3) 22-4. (2)
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q12 — medium · theory
100 100 × 10 × cos ������ 1 rL
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q13 — medium · numerical
= × × 10
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q14 — medium · theory
10 Hence to left of r circuit is capacitive
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q15 — medium · theory
������ 16
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q16 — medium · numerical
An alternating voltage V(t) = 220 sin 100 t electrical resonance if it contains either a
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q17 — medium · theory
21-2.
A. 2 (2) (3) ✓ Correct
B. Both Statement I and Statement II are true. components connected are shown in the
C. Both Statement I and Statement II are figure. Find the value of inductance of the coil
D. Statement I is true but Statement II in false. [JEE MAIN_020221_{S1}]
Q18 — medium · theory
For the given circuit, comment on the type of 21-6. ALTERNATING CURRENT
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q19 — medium · theory
In the circuit shown in the figure, the ratio of 22-7. ALTERNATING CURRENT
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q20 — medium · numerical
=× 21-1. rC
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q21 — medium · theory
VS P 60 545.45
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q22 — medium · numerical
i= = =2A So d E tR
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q23 — medium · theory
An AC current is given by 1 sint + 2 cost. the circuit is 6 . The power factor of the
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q24 — medium · theory
A series LCR circuit is connected to an AC 22-8. In the given circuit, the magnitude of VL and
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q25 — medium · theory
√2 √2 3
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q26 — medium · theory
1 sint + 2 cost. 62
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q27 — medium · numerical
������ = − = 10t − 36 E tR
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q28 — medium · theory
20 103 (2 0) 2 103
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q29 — medium · theory
Match list I with List II VC and IC are the voltage and current. Correct
A. (a)–(i),(b)–(iii),(c)–(iv),(d)–(ii) ✓ Correct
B. (a)–(ii),(b)–(iv),(c)–(iii),(d)–(i)
C. (a)–(ii),(b)–(iii),(c)–(iv),(d)–(i)
D. (a)–(ii),(b)–(iii),(c)–(i),(d)–(iv) (4)
Q30 — medium · numerical
source of 220 V, 50 Hz. The circuit contains a VC are twice that of VR. Given that f = 50 Hz,
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D