Convex Rear-View Mirror – Rankers Physics

Reflection by Spherical Mirrors: Practice Problem & Solution

Assertion (A): Rear view mirror of a vehicle is a convex mirror. Reason (R): It never makes real image of real objects.  
Both (A) & (R) are true and the (R) is the correct explanation of the (A)
Both (A) & (R) are true but the (R) is not the correct explanation of the (A)
(A) is true but (R) is false
Both (A) and (R) are false

Solution Explained:

To solve this problem, we apply the core principles of Reflection by Spherical Mirrors. Understanding the underlying formula is key to arriving at the correct answer below:

Convex mirrors are used as rear-view mirrors because they provide a wider field of view and always form virtual, erect, and diminished images of real objects. This property is crucial for drivers to see a larger area behind the vehicle and perceive objects as being further away. Both A and R are true, and R correctly explains the suitability of convex mirrors for this application.

Leave a Reply

Your email address will not be published. Required fields are marked *

Similar Practice Questions

Explore conceptually related problems to test your knowledge.

1. The speed of light in media $M_1$ and $M_2$ is $1.5 \times 10^8 m/s$ and $2.0 \times 10^8 m/s$ respectively. A ray of light enters from medium $M_1$ to $M_2$ at an incidence angle $i$. If the ray suffers total internal reflection, the value of $i$ is: (2010 Mains)
2. Assertion (A): Law of reflection is applicable for all type of mirrors. Reason (R): Rays which are parallel to principal axis are known as paraxial rays.  
3. Assertion (A): Light of wavelength \(5500 \text  A^0\) travelling in medium 1 is incident on an interface and gets refracted into medium 2. Due to refraction, if it deviates by an angle \(15^{\circ}\), then its wavelength in medium 2 could be greater than or smaller than \(5500 \text{ A^0}\) but never the same. Reason (R): As light is refracted, its colour changes.  
4. Assertion (A): A rectangular glass slab produces no deviation and no dispersion. Reason (R): Dispersive power of glass slab is zero.  
5. Assertion (A): Diamond in air shine brightly and when dipped in transparent oil, its shine reduces. Reason (R): Diamond shines due to multiple total internal reflections.