MHT CET 2019 2nd May Evening Shift | Wave Optics Question 118 | Physics

Light of wavelength ' $\lambda$ ' is incident on a single slit of width ' $a$ ' and the distance between slit and screen is ' $D$ '. In diffraction pattern, if slit width is equal to the width of the central maximum then ' $D$ ' is equal to

$\frac{a}{2 \lambda}$

$\frac{a^2}{2 \lambda}$

$\frac{a}{\lambda}$

$\frac{a^2}{\lambda}$

MHT CET 2019 2nd May Evening Shift

MCQ (Single Correct Answer)

-0

The luminous border that surrounds the profile of a mountain just before sun rises behind it, is an example of

dispersion

total internal reflection

interference

diffraction

MHT CET 2019 2nd May Morning Shift

MCQ (Single Correct Answer)

-0

In biprism experiment, the distance between source and eyepiece is 1.2 m, the distance between two virtual sources is 0.84 mm. Then the wavelength of light used if eyepiece is to be moved transversely through a distance of 2.799 cm to shift 30 fringes is

6533 $$\mathop A\limits^o $$

6537 $$\mathop A\limits^o $$

6535 $$\mathop A\limits^o $$

6351 $$\mathop A\limits^o $$

MHT CET 2019 2nd May Morning Shift

MCQ (Single Correct Answer)

-0

If a star emitting yellow light is accelerated towards earth, then to an observer on earth it will appear

becoming orange.

shining yellow.

gradually changing to blue.

gradually changing to red.

MHT CET Subjects