Montessori Olympus School Quiz

According to Fermat's principle, light travels along the path that takes the least time. Therefore, Route 1 must be the correct answer as it is the route that allows light to travel from point A to point B in the shortest amount of time compared to the other routes.

The correct answer is "Lateral Inverse." In plane mirrors, the phenomenon where the right side of an object appears as the left side in the reflected image is known as lateral inversion. This occurs because the mirror reverses the direction of light rays, causing the image to appear laterally inverted compared to the actual object.

In a pinhole camera, the image of an object is inverted. This is because light rays from the object pass through a small hole (pinhole) and form an inverted image on the opposite side of the camera. This phenomenon is a result of the way light rays interact with the pinhole and the principles of optics.

When an object is placed between the pole and the focus of a mirror, a virtual image is formed. This virtual image appears to be located behind the mirror and is always upright.

The correct answer is PC because in the figure, PC represents the line passing through the principal focus (P) and the center of curvature (C). The principal axis is defined as the line passing through the center of curvature and the principal focus of a lens or mirror. Therefore, PC is the correct choice for the principal axis in this figure.

The focal length of a spherical mirror is equal to half of the radius of curvature. In this case, the radius of curvature is given as 14 cm, so the focal length would be 7 cm.

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The rule of sign convention states that distances measured in the direction of light travel are positive, while distances measured in the opposite direction are negative. However, measuring all distances from the centre of curvature is not a rule of sign convention.

When the object distance (u) is negative, it indicates that the object is placed on the same side as the observer. A negative focal length (f) indicates a concave lens, which causes the image to be real and inverted. The positive height of the object (ho) suggests that the object is above the principal axis. Combining these factors, the image formed will be both enlarged and inverted.

By extension of reflected rays, we can determine the path that the light rays would have taken if they were actually coming from a specific point. In the case of a virtual image, the rays of light do not actually converge at a point, but they appear to diverge from a point behind the mirror or lens. This means that the image formed is not real and cannot be projected onto a screen. Therefore, the correct answer is "Virtual Image."