Physics MCQ on Wave Optics for NEET, JEE, Medical and Engineering Exam 2021

MCQ on Wave Optics: Previous trends reveal that NEET/JEE aspirants find Physics as the most challenging section amongst the other sections. But most of them fail to decipher the reason behind this. This particularly can be as the candidates taking up this examination are predominantly medical aspirants with their subject of interest being Biology. Also, sections like Physics are more on theories, laws, numerical as opposed to Biology which is more of fact-based, life sciences and comprising of substantial explanations.

In this post we are providing you MCQ on Wave Optics, which will be beneficial for you in upcoming NEET, AIIMS, JEE, WBJEE, Medical and Engineering Exams.

MCQ on Wave Optics

Q1. The ratio of the amplitude of the two sources producing interference 3 : 5, the ratio of intensities at maxima and minima is _______.
a) 5:3
b) 16:1
c) 25:9
d) 25:6

Q2. Which of the following statements indicates that light waves are transverse?
a) They travel in the vacuum
b) Light waves can be polarised
c) Light waves undergo diffraction
d) Light waves can show interference

Q3. In Young’s double-slit experiment, the phase difference between the light waves reaching the third bright fringe from the central fringe will be (λ=6000 Å).
a) 2π
b) 4π
c) 6π
d) Zero

Q4. What is the value of coherent time if L is the coherent length and c is the velocity of light?
a) cL
b) L/c
c) c/L
d) 1/Lc

Q5. The colours on the soap bubble is due to _______.
a) Interference
b) Polarisation
c) Diffraction
d) Reflection

Q6. A narrow slit is taken and a parallel beam of moving electrons is incident normally on it. At a larger distance from the slit, a fluorescent screen is placed. Which of the following statement is true if the size of the slit is further narrowed?
a) The diffraction pattern cannot be observed on the screen
b) The angular width of the central maxima of the diffraction pattern will increase
c) The angular width of the central maxima of the diffraction pattern will decrease
d) The angular width of the central maxima of the diffraction pattern remains the same

Q7. Two coherent sources of light can be obtained from _______.
a) Two different lamps
b) Two different lamps but of the same colour
c) Two different lamps of the same colour and having the same colour
d) None of these

Q8. Which of the following phenomenon is not explained by Huygen’s wave theory?
a) Diffraction
b) Interference
c) Polarisation
d) Photoelectric effect

Q9. Polarisation phenomenon explains which nature of light?
a) Transverse
b) Longitudinal
c) Geometrical
d) Both transverse and longitudinal

Q10. How does the diffraction band of blue light look in comparison with the red light?
a) No changes
b) Diffraction pattern disappears
c) Diffraction pattern becomes narrower
d) Diffraction pattern becomes broader

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By Team Learning Mantras