A converging lens is used to form an image on a screen. When the upper half of the lens…
Physics · Class 12 · CBSE — Ray Optics & Optical Instruments
A converging lens is used to form an image on a screen. When the upper half of the lens is covered by an opaque screen,
- half the image will disappear
- complete image will disappear
- intensity of image will decreases
- intensity of image will increases
Answer
(C) intensity of image will decreases
Sign up free on Edukali to view the step-by-step worked solution and practice thousands of similar questions.
Related practice questions
- A compound microscope consists of two converging lenses. One of them, of smaller aperture and smaller focal…
- There are certain material developed in laboratories which have a negative refractive index. A ray incident…
- A point object is placed at the centre of a glass sphere of radius 6 cm and refractive index 1.5. The…
- An object is placed at a distance of 1.5 m from a screen and a convex lens is interposed between them. The…
- The magnification produced by a spherical mirror is -2 0 . The mirror used and the nature of the image formed…
- A ray of light travels from a denser to a rarer medium. After refraction, it bends away from the normal. When…
- A plane wavefront is incident on a concave mirror of radius of curvature R. The radius of the refracted…
- Critical angle of glass is θ 1 and that of water is θ 2 . The critical angle for water and glass surface…
More Ray Optics & Optical Instruments questions · Browse all practice questions