Question:
A man holds a rectangular card in front of and parallel to a plane mirror. In order for him to see the entire image of the card, the least mirror area needed is:
A man holds a rectangular card in front of and parallel to a plane mirror. In order for him to see the entire image of the card, the least mirror area needed is:
Show Hint
The minimum mirror area needed to view the full image is based on the viewing geometry and is typically a fraction of the area of the object being reflected.
Updated On: May 8, 2025
- that of the whole mirror, regardless of its size
- that of the pupil of his eye
- one-half that of the card
- one-fourth that of the card
Hide Solution
Verified By Collegedunia
The Correct Option is D
Solution and Explanation
In order for a person to see the entire image of a card in a plane mirror, the area of the mirror should be such that it can reflect the full image.
The size of the image will depend on the distance between the mirror and the card.
For the minimum area needed to see the entire card, the mirror only needs to cover one-fourth of the area of the card, assuming optimal positioning of the viewer and the card.
Thus, the correct answer is (d).
The size of the image will depend on the distance between the mirror and the card.
For the minimum area needed to see the entire card, the mirror only needs to cover one-fourth of the area of the card, assuming optimal positioning of the viewer and the card.
Thus, the correct answer is (d).
Was this answer helpful?
0
1
Top Questions on Optics
- A beam of light coming from a distant source is refracted by a spherical glass ball (refractive index 1.5) of radius 15 cm. Draw the ray diagram and obtain the position of the final image formed.
- Name the type of lenses required by the persons for the correction of their defect of vision called presbyopia. Write the structure of the lenses commonly used for the correction of this defect giving reason for such designs.
- A double convex lens of glass has both faces of the same radius of curvature 17 cm. Find its focal length if it is immersed in water. The refractive indices of glass and water are 1.5 and 1.33 respectively.
- A point source is placed at the bottom of a tank containing a transparent liquid (refractive index \( n \)) to a depth H. The area of the surface of the liquid through which light from the source can emerge out is:
- Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A) : If Young’s double slit experiment is performed in an optically denser medium than air, then the consecutive fringes come closer.
Reason (R) : The speed of light reduces in an optically denser medium than air while its frequency does not change.
In the light of the above statements, choose the most appropriate answer from the options given below :
View More Questions
Questions Asked in IPU CET exam
- The most widely used code that represents each character as a unique 8-bit code is:
- IPU CET - 2023
- Binary Operations
- If A = 26, SUN = 27, then CAT = ?
- IPU CET - 2023
- Coding Decoding
Which of the following is an octal number equal to decimal number \((896)_{10}\)?
- IPU CET - 2023
- Binary Operations
- If A represents '1' and o represents '0'. What will be the one's complement of oAAooA?
- IPU CET - 2023
- Binary Operations
- The forces acting at a point are called as:
- IPU CET - 2023
- General Science
View More Questions