Home
Class 12
PHYSICS
In a Fraunhoffer diffraction experiment ...

In a Fraunhoffer diffraction experiment at a single slit using light of wavelength 400 nm, the first minimum is formed at an angle of `30^@` Then the direction `theta` of the first secondary maximum is

A

`tan^(-1)(4/3)`

B

`60^(@)`

C

`sin^(-1) (3/4)`

D

`tan^(-1) (3/4)`

Text Solution

Verified by Experts

The correct Answer is:
C
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • WAVE OPTICS

    AAKASH SERIES|Exercise LECTURE SHEET EXERCISE-III (LEVEL -I) (MAIN) (Straight Objective Type Questions)|9 Videos

  • WAVE OPTICS

    AAKASH SERIES|Exercise LECTURE SHEET EXERCISE-III (LEVEL -II) (MAIN) (Straight Objective Type Questions)|8 Videos

  • WAVE OPTICS

    AAKASH SERIES|Exercise LECTURE SHEET EXERCISE-II (LEVEL -I) (MAIN) (Straight Objective Type Questions)|10 Videos

  • WAVE MOTION AND SOUND

    AAKASH SERIES|Exercise PROBLEMS (LEVEL - II)|97 Videos

  • WAVES

    AAKASH SERIES|Exercise EXERCISE-III (Doppler effect :)|15 Videos

Similar Questions

Explore conceptually related problems

In a Fraunhofer diffraction experiment at a single slit using a light of wavelength 400 nm, the first minimum is formed at an angle of 30^(@) . The direction theta of the first secondary maximum is given by :

In a diffraction pattern due to single slit of width 'a' , the first minimum is observed at an angle 30^(@) when light of wavelength 5000 Å is inclined on the slit. The first secondary maximum is observed at an angle of:

Knowledge Check

  • In a Fraunhofer diffraction at single slit of width d with incident light of wavelength 5500 Ã…, the first minimum is observed, at angle 30^(@) . The first secondary maximum is observed at an angle theta=

    A
    `"sin"^(-1)((1)/(sqrt(2)))`
    B
    `"sin"^(-1)((1)/(4))`
    C
    `"sin"^(-1)((3)/(4))`
    D
    `"sin"^(-1)((sqrt(3))/(2))`

    • Similar Questions

    Explore conceptually related problems

    A single slit Fraunhofer diffraction pattern is formed with white light. For what wavelength of light the third secondary maximum in the diffraction pattern coincides with the secondary maximum in the pattern for red light of wavelength 6500 Å ?

    Fraunhoffer diffraction pattern of a single slit is obtained in the focal plane of lens of focal length 1m . If third minimum is formed at a distance of 5mm from the central maximum and wavelength of light used is 5000Å , then width of the slit will be –

    In a single slit diffraction set up, second minima is observed at an angle of 60^(@) . The expected position of first minima is

    The first diffraction minimum due to single slit diffraction is theta for a light of wavelength 5000A if the width of the slit is 1 times 10^21 cm then the value of theta is

    What is the width of a single slit if the first minimum is observed at an angle 2^@ with a light of wavelength 9680 Å ?

    Answer the following: (a) What is a wave front? How does it propagate? Using Huygens' principle, explain reflection of a plane wavefront from a surface and verify the laws of reflection. (b) A parallel beam of light of wavelength 500 nm falls on a narrow slit and the resulting diffraction pattern is obtained on a screen 1 m away. If the first minimum is formed at a distance of 2.5 mm from the centre of screen, find the (i) width of the slit, and (ii) distance of first secondary maximum from the centre of the screen.

    Monochromatic light of wavelength 580 nm is incident on a slit of width 0.30 mm. The screen is 2m from the slit . The width of the central maximum is

    Home
    Profile