An object 4 cm high is located 10 cm from the converging lens, whose focal length is 20 cm. The image that will be formed is:
Correct answer: D. Both Virtual and Erect
- A. Virtual
- B. Erect
- C. Real
- D. Both Virtual and Erect
- E. Both Erect and Real
Explanation
The object is placed 10 cm from a converging lens with a focal length of 20 cm, meaning it is inside the focal point. For converging lenses, when the object is placed between the focal point and the lens, the image formed is virtual and erect. Thus, the correct answer is 'Both Virtual and Erect'.Options stating the image is real or simply erect without being virtual are incorrect because a real image would be inverted, and a solely erect image implies it must also be virtual.
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Light is studied through reflection, refraction, dispersion, interference, diffraction and polarization, linking ray behavior with its wave nature. Questions may involve mirrors, lenses, optical instruments, refractive index and image formation, while geometrical optics deals with rays and wave optics explains effects such as interference and diffraction.
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