MHT CET 2023 10th May Evening Shift | Wave Optics Question 24 | Physics

In Young's double slit experiment, the two slits are 'd' distance apart. Interference pattern is observed on a screen at a distance 'D' from the slits. A dark fringe is observed on a screen directly opposite to one of the slits. The wavelength of light is

$$\frac{\mathrm{D}^2}{2 \mathrm{~d}}$$

$$\frac{\mathrm{d}^2}{2 \mathrm{D}}$$

$$\frac{\mathrm{D}^2}{\mathrm{~d}}$$

$$\frac{d^2}{D}$$

MHT CET 2023 10th May Evening Shift

MCQ (Single Correct Answer)

-0

A parallel beam of monochromatic light falls normally on a single narrow slit. The angular width of the central maximum in the resulting diffraction pattern

increases with increase of slit width.

decreases with increase of slit width.

decreases with decrease of slit width.

may increase or decrease with decrease of slit width.

MHT CET 2023 10th May Evening Shift

MCQ (Single Correct Answer)

-0

Light waves from two coherent sources arrive at two points on a screen with path difference of zero and $$\frac{\lambda^{\prime}}{2}$$. The ratio of intensities at the points is $$\left(\cos 0^{\circ}=1, \cos \pi=-1\right)$$

$$2: 1$$

$$1: 1$$

$$1: 2$$

$$\infty: 1$$

MHT CET 2023 10th May Morning Shift

MCQ (Single Correct Answer)

-0

A person is observing a bacteria through a compound microscope. For better observation and to improve its resolving power he should

increase the wavelength of light.

increase the refractive index of the medium between the object and objective lens.

decrease the focal length of the eyepiece.

decrease the diameter of the objective lens.

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