>
Exams
>
Physics
>
spherical lenses
>
at what distance should an object be placed from a
Question:
At what distance should an object be placed from a convex lens of focal length 15 cm to obtain a real image three times the size of the object?
CUET (UG) - 2023
CUET (UG)
Updated On:
Feb 28, 2025
10 cm
20 cm
40 cm
50 cm
Hide Solution
Verified By Collegedunia
The Correct Option is
B
Solution and Explanation
The correct option is(B):20 cm
Download Solution in PDF
Was this answer helpful?
0
0
Top Questions on spherical lenses
A small telescope has an objective of focal length 140 cm and an eye piece of focal length 5.0 cm. The magnifying power of telescope for viewing a distant object is :
NEET (UG) - 2024
Physics
spherical lenses
View Solution
A glass beaker has a solid, plano-convex base of refractive index 1.60, as shown in the figure. The radius of curvature of the convex surface (SPU) is 9 cm, while the planar surface (STU) acts as a mirror. This beaker is filled with a liquid of refractive index n up to the level QPR. If the image of a point object O at a height of ℎ (OT in the figure) is formed onto itself, then, which of the following option(s) is(are) correct?
JEE Advanced - 2024
Physics
spherical lenses
View Solution
A biconvex lens of refractive index 1.5 has a focal length of 20 cm in air. Its focal length when immersed in a liquid of refractive index 1.6 will be:
JEE Main - 2024
Physics
spherical lenses
View Solution
Radius of curvature of equiconvex lens is 20 cm. Material of lens is having refractive index of 1.5. Find image distance from lens if an object is placed 10 cm away from the lens.
JEE Main - 2024
Physics
spherical lenses
View Solution
A point object is moving at a constant speed of 1 ms
-1
along the principal axis of a convex lens of focal length 10cm. The speed of the image is also 1 ms
-1
, when the object is at _______ cm from the optic centre of the lens.
KCET - 2023
Physics
spherical lenses
View Solution
View More Questions
Questions Asked in CUET exam
Match List-I with List-II:
List-I
List-II
A
Megaliths
(I)
Decipherment of Brahmi and Kharoshti
B
James Princep
(II)
Emerged in first millennium BCE
C
Piyadassi
(III)
Means pleasant to behold
D
Epigraphy
(IV)
Study of inscriptions
Choose the correct answer from the options given below:
CUET (UG) - 2024
Political and Economic History
View Solution
From the given options, which pass connects Jammu with Srinagar?
CUET (UG) - 2024
Static GK
View Solution
In a square, the lengths of the diagonals are $(4k + 6)$ cm and $(7k - 3)$ cm. What is the area of the square (in cm²)?
CUET (UG) - 2024
Geometry
View Solution
A molecule X associates in a given solvent as per the following equation:
X ⇌ (X)
n
For a given concentration of X, the van’t Hoff factor was found to be 0.80 and the
fraction of associated molecules was 0.3. The correct value of ‘n’ is:
CUET (UG) - 2024
Solutions
View Solution
Find out which of the answer figures completes the figure matrix :
CUET (UG) - 2024
Image Based
View Solution
View More Questions