PHYSICS (भौतिक शास्त्र) Top 200 Objective MCQ Question, 12th Board PHYSICS Most VVI Objective Question With Answer PART – 1 In English Medium
1. Coulombian force is
(A) Central force
(B) electric force
(C) both (A) and (B)
(D) none of these
ANSWER :- C
2. uniform electric field exists along X-axis, then equipotential is along
(A) XY-plane
(B) XZ-plane
(C) YZ-plane
(D) anywhere
ANSWER :- C
3. To increase sensitivity of a potentiometer, its
(A) area should be increased .
(B) Current should be decidas
(C) current should be increased
(D) length should be increased.
ANSWER :- A
4. The phase difference between electric and magnetic fields in an electromagnetic wave is
(A) O
(B) π / 2
(C) π
(D) anything.
ANSWER :- B
5. Sky wave communication is based upon
(A) reflection by ionosphere
(B) absorption by ionosphere
(C) transmission through ionosphere
(D) none of these.
ANSWER :- A
6. Main gate (Basic gate) is
(A) AND, OR
(B) NAND, NOR
(C) OR, NOT
(D) AND, OR, NOT.
ANSWER :- D
7. The modulation index in amplitude modulation is
(A) always zero
(B) between 0 and 1
(C) between 1 and
(D) none of these
ANSWER :- B
8. The capacitance of a parallel plate capacitor …….. by the introduction of a dielectric between the plates of the capacitor.
(A) increases
(B) decreases
(C) remains same
(D) nothing can be said
ANSWER :- A
9. The quantum of electric in e.s.u. is.
(A) 4.78 x 10-10
(B) + 1.6 x 10-19 charge
(C) 2.99 x 109
(D) – 1.6 x 10-19
ANSWER :- D
10. Electrostatic field is
(A) conservative
(B) non-conservative
(C) somewhere conservative and some where non-conservative
(D) none of these
ANSWER :- A
11. Kilowatt-hour (kWh) is the unit of
(A) power
(B) energy
(C) torque
(D) none of these
ANSWER :- B
12. A charge moving with uniform velocity produces
(A) only an electric field
(B) only a magnetic field
(C) electromagnetic field
(D) none of these
ANSWER :- C
13. SI unit of pole strength is
(A) N
(B) N/Am
(C) Am
(D) T
ANSWER :- C
14. The electrostatic field is
(A) conservative
(B) non-conservative
(C) both (A) and (B)
(D) none of these.
ANSWER :- A
15. 1 coulomb charge = ……………… e.s.u.
(A) 3 x 109
(B) 9×109
(C) 8.85 x 10-12
(D) none of these.
ANSWER :- A
16. The specific charge of electron is
(A) 1.8 x 1011 C/kg
(B) 1.8 x 10-19 C/kg
(C) 1.9 x 10-19 C/kg
(D) None of these
ANSWER :- A
17. The electrical resistance of a healthy man is
(A) 50,000
(B) 10,000
(C) 1,000
(D) 10
ANSWER :- A
18. Nickel is a
(A) paramagnetic
(B) diamagnetic
(C) ferromagnetic
(D) none of these
ANSWER :- A
19. The radius of curvature of plane mirror is
(A) infinite
(B) zero
(C) +5cm
(D) -5cm
ANSWER :- A
20. SI unit of power of a lens is
(A) joule
(B) dioptre
(D) watt.
(C) candela
ANSWER :- B
21. 64 identical drops each of capacity 5μF combine to form a big drop. What is the capacity of big drop ?
(A) 4 μF
(B) 25 μF
(C) 20 μF
(D) 164 μF
ANSWER :- C
22. A current flows in a wire of resistance 52 having potential difference 7 volt for 20 minutes. The heat produced is
(A) 140 cal
(B) 280 cal
(C) 700 cal
(D) 2800 cal
ANSWER :- D
23. The value of amplitude modulation index is
(A) always 0
(B) between 1 and ∞
(C) between 0 and 1
(D) always 1
ANSWER :- C
24. When a ray of light enters a glass slab its wavelength
(A) decreases
(B) increases
(C) remains unchanged
(D) data are not complete
ANSWER :- A
25. The unit of reactance is
(A)mho
(B) ohm
(C) farad
(D) ampere
ANSWER :- B
26. Write the decimal number 25 in binary.
(A) (1100)2
(B) (1001)2
(C)(11001)2
(D) (11101)2
ANSWER :- C
27. Which series comes in visible region of hydrogen spectrum ?
(A) Lyman series
(B) Balmer series
(C) Paschen series
(D) Brackett series
ANSWER :- B
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✔ PHYSICS VVI OBJECTIVE PART 1 [Q.1-30]
✔ PHYSICS VVI OBJECTIVE PART 2 [Q.31-60]
✔ PHYSICS VVI OBJECTIVE PART 3 [Q.61-90]
✔ PHYSICS VVI OBJECTIVE PART 4 [Q.91-120]
✔ PHYICS VVI OBJECTIVE PART 5 [Q.121-160]
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✔ CHEMISTRY VVI OBJECTIVE PART 1 [Q.1-30]
✔ CHEMISTRY VVI OBJECTIVE PART 2 [Q.31-60]
✔ CHEMISTRY VVI OBJECTIVE PART 3 [Q.61-90]
✔ CHEMISTRY VVI OBJECTIVE PART 4 [Q.91-120]
✔ CHEMISTRY VVI OBJECTIVE PART 5 [Q.121-160]
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Nice questions
Sir, please provide pdf of physics and chemistry in english there is only one pdf and in each of your videos you’re providing a link by following those links same pdf opens evertime. Can you upload pdfs fastly please..
Sir, please provide pdf of physics and chemistry in english there is only one pdf and in each of your videos you’re providing a link by following those links same pdf opens evertime. Can you upload pdfs fastly please..