Double Concave Lens Characteristics
A double concave lens is a type of diverging lens. Its defining physical characteristic is its shape.
Lens Shape Analysis
- The lens surfaces curve inwards on both sides.
- This results in the lens being thinner in the middle and progressively thicker at the edges.
Optical Properties
Due to its shape, a double concave lens causes parallel light rays passing through it to spread out or diverge. It does not focus light to a single point; instead, it creates a virtual focal point from which the diverged rays appear to originate.
Conclusion
Based on its physical structure (thinner middle, thicker edges) and its effect on light (divergence), the correct description is that it is thicker at the edges and thinner in the middle, causing light rays to diverge.
Similar Questions
- When an object is placed at infinity in front of a convex lens, the image formed is:
- A concave mirror is used in torches and car headlights because it:
A convex mirror of focal length f (in air) is immersed in a liquid . The focal length of the mirror in liquid \(\left( {\mu - \frac{4}{3}} \right)\) will be:
The reflector of a searchlight is a:
If you look into a mirror and find that the image (your reflexion) is smaller than you, then the type of the mirror is:
The focal length of a concave mirror with a radius of curvature of 20.0 cm is:
Find the position of the image formed by a concave mirror when the object is placed between P and F?
A person holding a pen in his left-hand sees his reflection in the mirror holding the pen in his right hand. This is due to which of the following phenomena?
- Complete the statement with correct option.
In dispersion without deviation,_________________ - A thin prism $P_1$ of angle $4^\circ$ and refractive index 1.54 is combined with another thin prism $P_2$ of refractive index 1.72 to produce dispersion without deviation. The angle of $P_2$ is
Important Questions from Optics
Which one of the following colours may be obtained by combining green and red colours?
Which of the following are the primary colours of light?
Which among the following is used as a reflector in search lights?
The incident ray, the ray perpendicular to the point of incidence, and the reflected ray all lie________.
Which is the only event to prove that light is a transverse wave?
A. Scattering of light
B. Interference
C. Diffraction
D. Polarisation
