Reflection Of Light At Curved Surfaces (VSAQs)

Physical Science | 1. Reflection Of Light At Curved Surfaces – VSAQs:
Welcome to VSAQs in Chapter 1: Reflection Of Light At Curved Surfaces. This page contains the most important VSAQs in this chapter. Aim to secure top marks in your exams by understanding these clear and straightforward Very Short Answer Questions.

VSAQ-1 : Write any two uses of spherical mirrors.

Uses of Spherical Mirrors:

  1. In Dental Examinations and Treatments:
    Dentists use concave mirrors to observe magnified images of teeth. This aids in dental examinations and treatments, providing a detailed view of the oral cavity.
  2. In Vehicle Safety:
    Convex mirrors are utilized as rear-view or wing mirrors in vehicles. They provide a wider field of view and reduce blind spots, enhancing road safety.

These applications demonstrate the practicality and importance of spherical mirrors in various fields, from healthcare to transportation.

VSAQ-2 : Write any two uses of convex mirror in day to day life.

Uses of Convex Mirrors in Daily Life:

  1. In Vehicles:
    Convex mirrors are widely used as side mirrors in vehicles. They offer a wider field of view, reducing blind spots and improving overall safety while driving.
  2. For Security Purposes:
    Convex mirrors are employed in surveillance and security systems. They are effective for monitoring blind spots, corners, and other areas that require constant observation.

These practical applications highlight how convex mirrors significantly enhance safety and security in our daily lives.

VSAQ-3 : State the differences between virtual image and real image.

Differences between Real Image and Virtual Image:

Real Image:
  1. Convergence of Light Rays: Forms when light rays converge at a specific point after reflection from the mirror.
  2. Screen Formation: The image is formed on a screen.
  3. Orientation: The image is inverted.
  4. Required Optics: Requires a converging lens or concave mirror.
Virtual Image:
  1. Apparent Convergence of Light Rays: Forms when light rays appear to converge at a particular point after reflection from the mirror.
  2. Image Location: The image appears on the mirror or lens itself but cannot be obtained on a screen.
  3. Orientation: The image is upright or erect.
  4. Required Optics: Can be produced using a diverging lens or convex, concave, or plane mirror.

VSAQ-4 : Does focal length of a spherical mirror changes when it is completely immersed in water? Predict and write the reason.

  1. The focal length of a spherical mirror does not change when it is completely immersed in water or any other liquid.
  2. Focal length is an inherent property of the mirror that depends only on its shape and curvature, not on the surrounding medium.
  3. Therefore, whether the mirror is in air, water, or any other medium, its focal length remains the same.
  4. This property is essential in various optical applications where the focal length needs to be consistent and predictable.