jee_main_2026_22_january_evening - Wave Optics Topics

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QUESTION #37 Refractive Index and Wavelength
The wavelength of light, while it is passing through water is 540 nm. The refractive index of water is (4)/(3). The wavelength of the same light when it is passing through a transparent medium having refractive index of (3)/(2) is ____ nm.
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QUESTION #40 Single Slit Diffraction
Which of the following are true for a single slit diffraction? (A) Width of central maxima increases with increase in wavelength keeping slit width constant. (B) Width of central maxima increases with decrease in wavelength keeping slit width constant. (C) Width of central maxima increases with decrease in slit width at constant wavelength. (D) Width of central maxima increases with increase in slit width at constant wavelength. (E) Brightness of central maxima increases for decrease in wavelength at constant slit width. Options :
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JEE Physics: Waves (+15.5%) | Electrostatics: Concentric Shells (-29.7%) | Modern Physics: Photoelectric Clones (+34.2%) | Mathematics: Definite Integrals (+18.1%) | Chemistry: Coordination Splitting (-11.4%) | JEE Physics: Waves (+15.5%) | Electrostatics: Concentric Shells (-29.7%) | Modern Physics: Photoelectric Clones (+34.2%) | Mathematics: Definite Integrals (+18.1%) | Chemistry: Coordination Splitting (-11.4%)

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