Exams › NEET › Physics

Size of images A₁ and A₂ are given. From the displacement method, the area of the source of light is calculated as √A₁A₂. Which of the following is correct?

1. A₁ = A₂
2. A₁ > A₂
3. A₁ < A₂
4. None of the above

Correct answer: None of the above

Solution

The displacement method involves two positions of the lens, and the sizes of the images depend on the distances. The relationship between A₁ and A₂ is not fixed; it depends on the setup, so none of the given options is universally correct.

Related NEET Physics questions

• An image formed by a plane mirror is:
• One face of a rectangular glass plate 6 cm thick is silvered. An object held 8 cm in front of the first face forms an image 12 cm behind the silvered face. The refractive index of the glass is
• Time taken by sunlight to pass through a window of thickness 4 mm whose refractive index is 3/2 is
• A beam of monochromatic light is refracted from vacuum into a medium of refractive index 1.5, the wavelength of refracted light will be
• Green light of wavelength 5460 Å is incident on an air-glass interface. If the refractive index of glass is 1.5, the wavelength of light in glass would be (c = 3 × 10⁸ ms⁻¹)
• When a biconvex lens of glass having refractive index 1.47 is dipped in a liquid, it acts as a plane sheet of glass. This implies that the liquid must have refractive index.

⚔️ Practice NEET Physics free + battle 1v1 →