When the lower half of the convex lens is blackened the image becomes?

Every part of a lens forms a complete image. If the lower part of the lens is blackened, even then complete image will be formed but its intensity will decrease.

What happens when we cover one half of any lens or mirror with black paper do we get the full image?

Even when half of the mirror is covered with black paper, it would still produce a complete image but the image produced would be fainter (of lesser intensity) than the image produced when half mirror was not covered.

How will the image be affected if the lower half of the convex lens is polished such that no light passes through lower half?

there will be no effect.

What happens to the image if lower half of a concave lens is painted black?

(i) Image formed will be between the focus and center of curvature, it would be inverted and smaller in size as apparent from the ray diagram. (ii) If the lower half of the mirror’s reflecting surface is painted black, the position of image will be same but its intensity gets reduced.

When half of the convex lens is covered?

Note: Even if half of the convex lens is covered with a black sheet of paper, the lens will produce a complete image of the object. However, the intensity of the image will be less and the image formed will be less bright as compared to the one formed by a complete convex lens.

What happens when you cover half of a convex lens?

Cover half the lens If we cover the top half of the lens, the image just gets dimmer. This tells us that light from all parts of the object goes through all of the lens and then forms the image, so we’re losing about half the light from every part of the object when we block half the lens.

What happen when one half of convex lens is covered?

A convex lens can produce the complete image of the object even though half of the lens is covered. This is because light coming from the object can be refracted from the other half of the lens. However, the intensity of light will be reduced.

What happens when half the lens is covered?

What happens to the intensity if half a part of the convex lens is covered?

If half part of a convex lens is covered, the focal length does not change, but the intensity of image decreases.

What happens to the image formed by a convex lens when half the lens is covered?

If the top half portion of the lens is covered, we are blocking half the rays incident on it. Image will be formed by the rays of the bottom half of the lens. This means that every broken piece of the lens which has a part of both the curved surface should be able to form an image, although a less bright image.

When half mirror is covered with black paper?

Complete answer: If half of the mirror is covered with black paper then the image shape will remain unaffected. Just intensity of image will reduce as now, number of reflecting rays will be less as no reflection takes place due to the covered portion.

What happens when half of convex lens is covered with black paper?

What happens when a convex lens is covered with a black paper?

Even if one half of a convex lens will be covered with a black paper, it would still produce the complete image but the image will be a bit fainter Adjust the position of lens until a sharp image of candle is observed. We will observe that the image formed is real, inverted and sharp.

What happens to the intensity of an image formed by half-covered lens?

If half of the lens covered with black paper, then the aperture of the lens decreases and hence the intensity of the image formed by a half covered lens decreases.

Should I cover half of my lens with black paper?

So when you cover half of the lens with black paper, you are not letting the refraction happen from that part, inturn reducing the intensity/brightness of the image. A very simple way you can realise this fact is by looking at yourself in a small and a bigger mirror.

Why does the brightness of image decrease when part of lens is blocked?

A smaller lens can also form complete image of an object placed in front of it. However, brightness of the image decreases when some part of lens is blocked. It is because now lesser number of rays pass through the lens. Was this answer helpful? 0 0