(i) True - Image blur in a pinhole camera does increase with increasing pinhole diameter. This is because a larger pinhole allows more diverging light rays to enter, which leads to a less sharp image.

(ii) True - Diffraction does limit the sharpness of the image when using small pinholes. When the pinhole is too small, light waves passing through it will diffract, or spread out, causing the image to blur.

(iii) False - Pinhole cameras are not focused by adjusting the distance to the image plane. In a pinhole camera, all light rays from a scene pass through a single point (the pinhole), and thus the image is in focus regardless of the distance to the image plane. The image plane distance in a pinhole camera only changes the field of view and the size of the projection, not the focus.

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(i) True - Image blur in a pinhole camera does increase with increasing pinhole diameter. This is because a larger pinhole allows more diverging light rays to enter, which leads to a less sharp image.

(ii) True - Diffraction does limit the sharpness of the image when using small pinholes. When the pinhole is too small, light waves passing through it will diffract, or spread out, causing the image to blur.

(iii) False - Pinhole cameras are not focused by adjusting the distance to the image plane. In a pinhole camera, all light rays from a scene pass through a single point (the pinhole), and thus the image is in focus regardless of the distance to the image plane. The image plane distance in a pinhole camera only changes the field of view and the size of the projection, not the focus.

Knowee AI · Accepted Answer

(i) True - Image blur in a pinhole camera does increase with increasing pinhole diameter. This is because a larger pinhole allows more diverging light rays to enter, which leads to a less sharp image.

(ii) True - Diffraction does limit the sharpness of the image when using small pinholes. When the pinhole is too small, light waves passing through it will diffract, or spread out, causing the image to blur.

(iii) False - Pinhole cameras are not focused by adjusting the distance to the image plane. In a pinhole camera, all light rays from a scene pass through a single point (the pinhole), and thus the image is in focus regardless of the distance to the image plane. The image plane distance in a pinhole camera only changes the field of view and the size of the projection, not the focus.

Consider a pinhole camera. Which of the following statements is/are true, if any?(i) Image blur always increases with increasing pinhole diameter(ii) Diffraction limits the sharpness of the image when using small pinholes(iii) Pinhole cameras are focussed by adjusting the distance to the image plane

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