Montessori Olympus School Quiz

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  • 1/10 Questions

    According to fermat principle, the route which light travel from A to B

    • Route 2
    • Route 1
    • Route 4
    • Route 3
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About This Quiz

This quiz from Montessori Olympus School focuses on fundamental concepts of optics in physics, exploring light paths, image formation, and sign conventions.

Montessori Olympus School Quiz - Quiz

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  • 2. 

    In plane mirrors, right - left inversion of image is called

    • Inverse

    • Reverse

    • Lateral Inverse

    • Same side

    Correct Answer
    A. Lateral Inverse
    Explanation
    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.

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  • 3. 

    The image of an object in pinhole camera is ________________

    • Erect 

    • Inverted

    • Diminished

    • Plain

    Correct Answer
    A. Inverted
    Explanation
    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.

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  • 4. 
    From this figure i = - ProProfs

    From this figure i =

    • 500

    • 900

    • 400

    • 1800

    Correct Answer
    A. 400
  • 5. 
    From this figure the principal axis is - ProProfs

    From this figure the principal axis is

    • AR

    • AC

    • AP

    • PC

    Correct Answer
    A. PC
    Explanation
    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.

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  • 6. 

    If radius of curvature of a spherical mirror (R) = 14cm them the focal length =____________

    • 28 cm

    • 35 cm

    • 7 cm

    • 21 cm

    Correct Answer
    A. 7 cm
    Explanation
    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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  • 7. 

    In mirrors the virtual image is formed when the object is at _____________

    • Focus

    • ​​​​​​between pole and focus

    • At centre of curvature

    • Beyond the centre of curvature

    Correct Answer
    A. ​​​​​​between pole and focus
    Explanation
    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.

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  • 8. 

    Among these which is not a rule of sign convention?

    • Measure all distances from centre of curvature

    • The distance in light travelling direction is positive

    • Distance in opposite direction is negative

    • ​​​​​​Measure all distances from (Pole)

    Correct Answer
    A. Measure all distances from centre of curvature
    Explanation
    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.

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  • 9. 

    Focal laugh (f) =-15cm object distence (u) = -25cm height of the object (ho) = +4cm then the image is

    • Enlarged

    • Inverted

    • Both Enlarged & Inverted

    • None of these

    Correct Answer
    A. Both Enlarged & Inverted
    Explanation
    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.

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  • 10. 

    1. By extension of reflected rays we can get ___________ image

    • Virtual Image

    • Real Image

    • Inverted Image

    • No image

    Correct Answer
    A. Virtual Image
    Explanation
    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."

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  • Current Version
  • Apr 19, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Apr 19, 2020
    Quiz Created by
    PRASHANTH
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