COMEDK2024Morning ShiftPhysicsWave OpticsActual
In a single slit diffraction experiment, for slit width ' ' the width of the central maxima is ' '. If we double the slit width then the corresponding width of the central maxima will be:
Options
- A2
- B4
- C2
Correct answer
B. 4
Step-by-step solution
The angular width of the central maximum in a single slit diffraction experiment is given by the formula = 2 a , where a is the slit width and is the wavelength of light. The linear width of the central maximum on a screen at a distance D from the slit is given by = D = 2 D a . From this expression, it is evident that the width of the central maximum is inversely proportional to the slit width a , i.e., 1 a . Let the initial slit width be a₁ = a and the initial width of the central maximum be ₁ = . When the slit wi