For constructive interference to take place between two monochromatic light waves of wavelength λ, the path difference should be

(1) $\left(2n-1\right)\frac{\lambda }{4}$

(2) $\left(2n-1\right)\frac{\lambda }{2}$

(3) $n\lambda$

(d) $\left(2n+1\right)\frac{\lambda }{2}$

Concept Questions :-

Young Double slit experiment
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:

Soap bubble appears coloured due to the phenomenon of

(1) Interference

(2) Diffraction

(3) Dispersion

(4) Reflection

Concept Questions :-

Interference vs Diffraction
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:

Which of the following statements indicates that light waves are transverse

(1) Light waves can travel in vacuum

(2) Light waves show interference

(3) Light waves can be polarized

(4) Light waves can be diffracted

Concept Questions :-

Polarization of light
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:

Interference was observed in interference chamber when the air was present, now the chamber is evacuated and if the same light is used, a careful observer will see

(1) No interference

(2) Interference with bright bands

(3) Interference with dark bands

(4) Interference in which width of the fringe will be slightly increased

Concept Questions :-

Superposition principle
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:

Ray diverging from a point source form a wave front that is

(1) Cylindrical

(2) Spherical

(3) Plane

(4) Cubical

Concept Questions :-

Wave front
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:

Two coherent sources have intensity in the ratio of $\frac{100}{1}$. Ratio of (intensity) max/(intensity) min is

(1) $\frac{1}{100}$

(2) $\frac{1}{10}$

(3) $\frac{10}{1}$

(4) $\frac{3}{2}$

Concept Questions :-

Superposition principle
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:

If two waves represented by ${y}_{1}=4\mathrm{sin}\omega t$ and ${y}_{2}=3\mathrm{sin}\left(\omega t+\frac{\pi }{3}\right)$ interfere at a point, the amplitude of the resulting wave will be about

(1) 7

(2) 6

(3) 5

(4) 3.5

Concept Questions :-

Superposition principle
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:

Two coherent sources of intensities, I1 and I2 produce an interference pattern. The maximum intensity in the interference pattern will be

(1) I1 + I2

(2) ${I}_{1}^{2}+{I}_{2}^{2}$

(3) (I1 + I2)2

(4) ${\left(\sqrt{{I}_{1}}+\sqrt{{I}_{2}}\right)}^{2}$

Concept Questions :-

Superposition principle
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:

Two beams of light having intensities I and 4I interfere to produce a fringe pattern on a screen. The phase difference between the beams is $\frac{\pi }{2}$ at point A and π at point B. Then the difference between the resultant intensities at A and B is

(1) 2I

(2) 4I

(3) 5I

(4) 7I

Concept Questions :-

Superposition principle
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:

Two waves are represented by the equations ${y}_{1}=a\mathrm{sin}\omega t$ and ${y}_{2}=a\mathrm{cos}\omega t.$ The first wave

(1) Leads the second by $\pi$

(2) Lags the second by $2\pi$

(3) Leads the second by $\frac{\pi }{2}$

(4) Lags the second by $\frac{\pi }{2}$

Concept Questions :-

Superposition principle