Class 12th Physics Chapter One MCQ

 हम आपका हमारी वेबसाइट Exam Techz हार्दिक स्वागत करते हैं आज हम Class 12th Physics Chapter One MCQ Question के बारें में पढ़ेंगे तो देर किस बात की आइए शुरू करते हैं.

Class 12th में Physics के Exam में पूछे जाने वाले कुछ महत्वपूर्ण प्रश्न के जवाब आज हम आपके लिए लाए.

Class 12th Physics Chapter One MCQ

1. Coulomb is the S.I. unit of ______
(A) Current 
(B) Charge
(C) Force
(D) none of these

2. The minimum energy required to free an electron is called _______
(A) Current
(B) Work function
(C) Potential
D) Kinetic energy

3. The minimum value of charge on any charged body is ______
(A) 1.6 × 10-19C
(B) 1 C
(C) 1.6 × 1019C
(D) 1µC

4. What is the charge on neutron ?
(A) Zero
(B) +1.6 × 10-19C
(C)   1C 
(D) -1.6 × 10-19C

5. What is the charge on a proton ?
(A)  +1.6 × 1019
(B)  -1.6 × 10-19
(C)  -1.6 × 1019C
(D)  +1.6 × 10-19C

6. What is the charge on an electron ? 
(A) +1.6 × 1019
(B) -1.6 × 10-19C
(C) -1.6 × 1019
(D) +1.6 × 10-19C

7. What is the charge on metal when 6 electrons are removed from it ?
(A) 1.6 × 10-19C
(B) 9.6 × 10-19C
(C) 0
(D) 16×10-19C

8. During charging by conduction, two bodies are ______
(A) Rubbed with each other
(B) Made in physical contact with each other
(C) Placed near to each other hd) collide with each other
(D) Collide with each other

9. If distance between the charges is thrice keeping their magnitude same, then the electric force will become
(A) Four times 
(B) One fourth
(C) One ninth
(D) Will remain same

10. Dielectric constant of a metal is:-
(A) 1
(B) 0
(C) Φ
(D) indefinite

11. The S.I. unit of absolute electrical permittivity will be _____
(A) Nm²/C²
(B) Ampere
(C) C²/Nm²
(D) Unitless

12. The S.I. unit of relative electrical permittivity will be _______
(A) Nm²/C²
(B) Ampere
(C) C²/Nm²
(D) Unitless

13. The dimensions of electric permittivity is ______
(A) [M³L²T²A³] 
(B) [M-1L-3T4]
(C) [M°L°T°A°] 
(D) [M-1L-3T³A²]

14. The ratio of the forces between two charged bodies in a medium of dielectric constant k to in air is _______
(A) 1 : k 
(B) k : 1 
(C) 1 : k2 
(D) k2 : 1

15. Two spherical conductors A and B having equal radii and carrying equal charges repel each other with a force F when kept apart at some distance. They are taken in a medium having dielectric constant 8. The new force between them will be ________
(A) F/4 
(B) F/6 
(C) 3F/6
(D) F/8

16. The electric field lines from a -ve charge will be ________
(A) Away from the charge 
(B) towards the charge
(C)Sometimes away from or sometimes towards the charge
(D) none of these 



The energy density of an electric field E ______

The cause of charging is ______

Value of absolute electrical permittivity will be ________

Value of electrical permittivity of air/ Vacuum will be ______

SI unit of electric field are _____







इस लेख को पढ़ने के लिए आपका बहुत बहुत धन्यवाद यदि आपकी यह लेख पसंद आया हो तो इसे शेयर करना न भूले और यदि आपके मन मे कोई सवाल है तो हमसे कमेंट के माध्यम से अवश्य पूछे.
।। धन्यवाद ।।

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