The fringe width is doubled because fringe width ‘ẞ’ is directly proportional to the distance of separation ‘D’ between the slits and screen. Class 12 Physics Chapter 10 Wave Optics Session 2024-2025.
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Light sources which emit light waves of same wavelength (or frequency) having either zero or a constant originating phase difference are called coherent sources of light. Class 12 Physics Chapter 10 Wave Optics Session 2024-2025.
A convex lens of least possible focal length so that its magnifying power is high. Class 12 Physics Chapter 9 Ray Optics and Optical Instruments Session 2024-2025.
The refractive index of prism material differs from colour to colour and angle of deviation ‘δ’ a light ray undergoing refraction through a prism depends on its refractive index. Thus, angle deviation is different for different colours of light. Class ...
On the material of the prism and the wavelength of light used. Class 12 Physics Chapter 9 Ray Optics and Optical Instruments Session 2024-2025.
Focal length of concave mirror even in water is same at 20 cm. Class 12 Physics Chapter 9 Ray Optics and Optical Instruments Session 2024-2025.
Focal length of each part is same as that of original lens. Class 12 Physics Chapter 9 Ray Optics and Optical Instruments Session 2024-2025.
n = 1.5. Class 12 Physics Chapter 9 Ray Optics and Optical Instruments Session 2024-2025.
Four times the focal length of the lens. Class 12 Physics Chapter 9 Ray Optics and Optical Instruments Session 2024-2025.
Virtual image formed by a convex lens is erect and magnified but the virtual image formed by a concave lens is always erect and diminished one. Class 12 Physics Chapter 9 Ray Optics and Optical Instruments Session 2024-2025.