An observer views his own image in a convex mirror of radius of curvature R. If the least distance of distinct vision for the observer is d, calculate

Monjur Alahi

An observer views his own image in a convex mirror of radius of curvature R. If the least distance of distinct vision for the observer is d, calculate the maximum possible magnification.


0 like 0 dislike
1 views
Share with your friends

1 Answers

Salim Ahmed Kawsar

Call

Correct Answer - `(R)/(sqrt(R^(2)+d^(2))+d)`

0 like 0 dislike
1 views
Talk Doctor Online in Bissoy App
A man uses a concave mirror for shaving. He keeps his face at a distance of `20cm` form the mirror and gets an image which is `1.5` times entarged. Fi

Correct Answer - `60cm` `m = -(v)/(u) = 1.5, v = -1.5u` `v = -1.5xx(-20)m = 30cm` `(1)/(f) = (1)/(30) + (1)/(-20) = (2-3)/(60), f = -60cm`.

2 Answers 1 views
Least distance of distinct vision for the normal eye is -

Option : C. 25 cm

2 Answers 1 views
Least distance of distinct vision for normal eye is -

Correct answer is (D) 25 cm

2 Answers 1 views
A point object O is placed at a distance of 60 cm from a concave mirror of radius of curvature 80 cm. (a) At what distance from the concave mirror sho

Correct Answer - (a) 90 cm (b) No.

2 Answers 3 views
The aperture diameter of a spherical mirror is `D = etaR` where `eta` is a positive number less than 2 and R is radius of curvature of the mirror. Con

Correct Answer - (a) `sqrt(2)` (b) `sqrt(3)`

2 Answers 1 views
An observer holds in front of himself a thin equi convex lens. R is the radius of curvature of each face. He sees two images of his nose, one erect an

Correct Answer - Reflection from the two surfaces results in formation of two images.

2 Answers 2 views
A double convex lens is placed on a horizontal plane mirror. A pin held horizontally above the lens coincides with its own image when it is 18cm from

Correct Answer - 1.48

2 Answers 7 views
A convex lens of focal length `15 cm` is placed in front of a convex mirror. Both are coaxial and the lens is `5 cm` from the apex of the mirror. When

Correct Answer - 55 cm

2 Answers 1 views
An object is placed at a distance of 15 cm from a convex mirror and images is formed at a distance of 5 cm from the mirror. Calculate the radius of cu

Correct Answer - `15.0cm`

2 Answers 1 views
A concave mirror forms a real image four times as tall as the object placed 10 cm infront of mirror. Find the position of the image and the radius of

Correct Answer - 40 cm in front of the mirror, `R =- 16 cm`

2 Answers 1 views
X