# Best Physics MCQs For Class 11 Sindh Board

Physics MCQs- Are you looking for some Physics MCQs Class 11 Sindh Board? If yes, then you have come to the right place! In this blog post, we will be discussing the important Physics MCQs that are relevant to Class 11 students studying in the Sindh Board. With these questions, you can easily prepare for your upcoming medical, engineering, and job exams and score better grades. So, let’s explore the important Physics MCQs Class 11 Sindh Board. You must solve these physics MCQs to get full marks. Pak MCQs provide you best quality content. Physics MCQs start now.

## Physics MCQs Class 11 Sindh Board

1. 2 light waves which are not coherent cannot produce:
a. interference pattern
b. different pattern
c. polarized light in the same plane
d. all of these
2. when light waves from the same source proceed to the same point along different paths, the conditions for
a. refraction are present
b. interference is present
c. polarisation is present
d. none of these
3. The property of light waves which does not vary with the medium is:
a. amplitude
b. frequency
c. velocity
d. wavelength
4. the very useful device for analyzing light sources with the help of which wavelength of light can be measured very correctly is
a. a different grating
b. an interferometer
c. newtons rings
d. All of these
5. one angstrom (1A) is equal to
a. 10 10 m
b. 10 -10 m
c. 10 -8 m
d. 10 -10 m
6. we can see various objects because they
a. absorb light
b. reflect light
c. emit light
d. refract light
7. in youngs double slit experiment the condition for constructive interference is that the path difference must be
a. an odd multiple of half-wavelength
b. an odd multiple of the whole wavelength
c. a whole number of wavelength
d. an even number of wavelength
answer: c. a whole number of wavelength
8. The foundation of colored bands by a thin film of oil or soap solution can be explained by the consideration of
a. dispersion
b. interference
c, diffraction
d. selective absorption of wavelengths
9. For reflection from a thin film maximum destructive interference occurs when the path difference is
a. an odd multiple of half wavelength
b. an even multiple of half wavelength
c. a whole number of half wavelength
d. a whole number of the whole wavelength
Answer: a. an odd multiple of half wavelength
10. when the moveable mirror in a Michelson interferometer moves a distance equal to the wavelength of the light used, the interference pattern moves by:
a. one fringe
b. 2 fringes
c. the odd half-integral number of fringes
d. 1/2 fringe
11. A Michelson interferometer may be used to
a. determine the speed of light
b. determine polarisation of light
c. measure concentration of glucose
d. none of these
12. The fact that the edge of a shadow formed by a point source of light shining on an object is not sharp is an example of
a. refraction
b. dispersion
c. reflection
d. diffraction
13. when using a diffraction grating with parallel sunlight falling at right angles to its surface:
a. green light is deviated more than red.
b. green light is deviated more than violet
c. violet is deviated more than red
d. blue is deviated more than red
Answer: b. green light is deviated more than violet
14. The plane of polarisation of a linearly polarized light is the plane:
a. normal to the direction of propagation
b. containing electric field vector and magnetic field vector
c. containing electric field vector and director of propagation.
d. containing magnetic field vector and direction of propagation
Answer: b. containing electric field vector and magnetic field vector
15. yellow light of a single wavelength cannot be:
a. reflector
b. refracted
c. polarised
d. dispersed
16. Which of the following the one that cannot be plane polarised is:
a. sound
b. white light
c. infra-red light
17. Two identical lasers can closely approximate
a. coherent sources
b. extended sources
c. point sources
d. diffracting sources
18. Electromagnetic waves transport:
a. energy only
b. momentum only
c. disturbance only
d. energy as well as momentum
Answer: d. energy as well as momentum
19. Huygens’s concept of secondary waves is used to
a. determine the frequency of wave
b. locate the wavefront
c. explain polarization
d. determine the speed of light