CBSE Class 11 Physics MCQs Set 7

CBSE Class 11 Physics MCQs Set 7 with answers available in Pdf for free download. The MCQ Questions for Class 11 Physics with answers have been prepared as per the latest 2021 syllabus, NCERT books and examination pattern suggested in Standard 11 by CBSE, NCERT and KVS. Multiple Choice Questions for important part of exams for Grade 11 Physics and if practiced properly can help you to get higher marks. Refer to more Chapter wise MCQs for NCERT Class 11 Physics and also download more latest study material for all subjects

1. A current of 5 A passes along a wire of length 1.0 m. the wire is at right angles to a magnetic field of flux density of 0.15 T. The force acting on the wire is...

A. 0    B. 0.03 N   C. 0.75 N   D. 33 N

2. The end product of most radioactive decay series is usually some form of

A. carbon  B. helium  C. hydrogen  D. lead

3. The cause of surface tension is...

A. adhesive forces   B. cohesive forces  C. external forces  D. gravitational force

4. The unit 'poise' is...

A. dyne.sec/cm B. dyne.cm/sec C. newton.sec/m D. dyne.sec/cm

5. Emission line spectrum will be obtained from...

A. candle flame  B. sodium lamp  C. Sun  D. white hot filament of an electric bulb

6. A hollow insulated brass sphere is positively charged. The electric potential inside the sphere is...

A. zero   B. greater than the potential at the surface

C. smaller than the potential at the surface  D. the same as that on the surface

7. The linear momentum of a body is P = a + (bt2/2). The force acting on the body is...

A. a + (bt/2)  B. a + bt  C. bt/2  D. bt

8. The weight of a body on the surface of earth is 100 N. Its weight at a depth half way to the centre of earth will be...

A. 50 N  B. 100 N  C. 25 N  D. 125 N

9. Two wires C and D of the length in the ratio 2 : 3, diameter in the ratio 2 : 3 and of the same material, are subjected to same force. Then the ratio of their extensions lc : ld is...

A. 3 : 2  B. 2 : 3   C. 4 : 9   D. 8 : 27

10. The potential energy of a harmonic oscillator is maximum when the displacement is equal to...

A. zero   B. 1/2 amplitude  C. amplitude   D. 1/4 amplitude

11. When the forces acting on a body are in equilibrium, its...

A. velocity is zero  B. displacement is zero  C. acceleration is zero  D. momentum is zero

12. An object at rest may possess...

A. velocity  B. momentum C. kinetic energy D. potential energy

13. A nonconservative force does not give rise to...

A. thermal energy  B. kinetic energy  C. light energy  D. potential energy

14. Atoms forming a molecule attain the arrangement in which they obtain...

A. zero potential energy  B. minimum potential energy

C. maximum potential energy  D. none of the above

15. Bulk modulus of a liquid is...

A. higher than that for a solid  B. higher than that for a gas

C. lower than that for a gas  D. zero

16. The CGS unit of coefficient of viscosity is...

A. dyne.second/cm2  B. newton.second/cm2 C. dyne.(second)2/cm2 D. newton.second/cm

17. The volume of a gas sample is directly proportional to its...

A. Fahrenheit temperature

B. Celsius temperature

C. Kelvin temperature

D. pressure

18. The approximate relationship between the coefficient of linear expansion(α) and the coefficient of cubical expansion(γ) is...

A. γ = α2

B. γ = α3

C. α = 3 γ

D. γ = 3 α

19. When capacitors are in parallel...

A. they are all at the same potential

B. they are at different potentials

C. their capacitances are equal

D. the equivalent capacitance is zero

20. The earth's magnetic field at sea level is...

A. 3 x 10-9 T B. 3 x 109 T C. 3 x 10-5 T D. 3 x 105 T

21. Monoatomic gases give...

A. line spectra

B. band spectra

C. continuous spectra

D. line and band spectra

22. The centre of mass of a rigid body...

A. lies inside the body

B. lies outside the body

C. can be inside or outside of the body

D. may not exist

23. If 'l' is the length of a simple pendulum and 'T' its period, then 'g' is given by...

A. (4π2l)/T2

B. 2π/(√ l/t)

C. 2πl/t

D. (4πl2)/t2

24. The rate at which an object radiates electromagnetic energy does not depend on its...

A. surface area

B. mass

C. temperature

D. ability to absorb radiation

25. Which of the following is neither a basic physical law nor derivable from one?

A. Coulomb's law

B. Ohm's law

C. Kirchhoff's first law

D. Kirchhoff's second law

26. The power dissipated as heat in an a.c. circuit depends on its...

A. resistance

B. inductive reactance

C. capacitive reactance

D. impedance

27. Impedance is a maximum at resonance in...

A. a series RLC circuit

B. a parallel RLC circuit

C. all RLC circuits

D. no RLC circuit

28. Red shift indicates...

A. recession of star

B. approaching movement of star

C. that red light changes to violet

D. that violet light changes to red

29. The penetration power of beta particles is 1. Then the relative penetration power of gamma rays is...

A. 1

B. 100

C. 1/1000

D. 1000

30. In a common-base circuit the current gain is...

A. 0

B. 1

C. greater than 1

D. smaller than 1

 

ANSWERS 
 
(1) C (2) D (3) B (4) A (5) B (6) D (7) D (8) A (9) A (10) C (11) C (12) D (13) D (14) B (15) B (16) A (17) C (18) D (19) A (20) C (21) A (22) c (23) A (24) B (25) B (26) A (27) B (28) A (29) B (30) D

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CBSE Class 11 Physics MCQs Answers to all MCQs
CBSE Class 11 Physics MCQs Set 1
CBSE Class 11 Physics MCQs Set 10
CBSE Class 11 Physics MCQs Set 11
CBSE Class 11 Physics MCQs Set 12
CBSE Class 11 Physics MCQs Set 13
CBSE Class 11 Physics MCQs Set 14
CBSE Class 11 Physics MCQs Set 15
CBSE Class 11 Physics MCQs Set 2
CBSE Class 11 Physics MCQs Set 3
CBSE Class 11 Physics MCQs Set 4
CBSE Class 11 Physics MCQs Set 5
CBSE Class 11 Physics MCQs Set 6
CBSE Class 11 Physics MCQs Set 7
CBSE Class 11 Physics MCQs Set 8
CBSE Class 11 Physics MCQs Set 9
Chapter 1 Physical World
CBSE Class 11 Physics Physical World MCQs Set A
CBSE Class 11 Physics Physical World MCQs Set B
Chapter 10 Mechanical Properties of Fluids
CBSE Class 11 Physics Mechanical Properties of Fluids MCQs
Chapter 11 Thermal Properties of Matter
CBSE Class 11 Physics Thermal Properties of Matter MCQs
Chapter 12 Thermodynamics
CBSE Class 11 Physics Thermodynamic MCQs
Chapter 13 Kinetic Theory
CBSE Class 11 Physics Kinetic Theory MCQs
Chapter 14 Oscillations
CBSE Class 11 Physics Oscillations MCQs
Chapter 15 Waves
CBSE Class 11 Physics Waves MCQs
Chapter 2 Units and Measurement
CBSE Class 11 Physics Units and Measurements MCQs
Chapter 3 Motion in a Straight Line
CBSE Class 11 Physics Motion in a Straight Line MCQs
Chapter 4 Motion in a Plane
CBSE Class 11 Physics Motion in a Plane MCQs
Chapter 5 Laws of Motion
CBSE Class 11 Physics Laws of Motion MCQs
Chapter 6 Work Energy and Power
CBSE Class 11 Physics Work Energy and Power MCQs
Chapter 7 System of Particles and Rotational Motion
CBSE Class 11 Physics Systems of Particles and Rotational Motion MCQs
Chapter 8 Gravitation
CBSE Class 11 Physics Gravitation MCQs
Chapter 9 Mechanical Properties of Solids
CBSE Class 11 Physics Mechanical Properties of Solids MCQs

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