JEE-ADVANCED SERIES Physics
Spherical Mirrors
4 previous year questions.
Volume: 4 Ques
Yield: Medium
High-Yield Trend
1
2019 1
2005 1
1999 1
1998 Chapter Questions 4 MCQs
01
PYQ 1998
easy
physics ID: jee-adva
A concave mirror is placed on a horizontal table with its axis directed vertically upwards. Let O be the pole of the mirror and C its centre of curvature. A point object is placed at C. It has a real image, also located at C. If the mirror is now filled with water, the image will be
1
real and will remain at C
2
real and located at a point between C and
3
virtual and located at a point between C and O
4
real and located at a point between C and O
02
PYQ 1999
medium
physics ID: jee-adva
A concave lens of glass, refractive index 1.5 has both surfaces of same radius of curvature R. On immersion in a medium of refractive index 1.75, it will behave as a
1
convergent lens of focal length 3.5R
2
convergent lens of focal length 3.0 R
3
divergent lens of focal length 3.5 R
4
divergent lens of focal length 3.0 R
03
PYQ 2005
medium
physics ID: jee-adva
A container is filled with water ( = 1.33) up to a height of 33.25 cm. A concave mirror is placed 15 cm above the water level and the image of an object placed at the bottom is formed 25 cm below the water level. The focal length of the mirror is
1
10 cm
2
15 cm
3
20 cm
4
25 cm
04
PYQ 2019
easy
physics ID: jee-adva
A thin convex lens is made of two materials with refractive indices and , as shown in figure. The radius of curvature of the left and right spherical surfaces are equal. / is the focal length of the lens when = = n. The focal length is when = n and . Assuming and , the correct statement(s) is/are,
1
$\left|\frac{\Delta f}{f}\right|
2
For and cm, the value of will be 0.02 cm (round off to decimal place)
3
If then
4
The relation between and remains unchanged if both the convex surfaces are replaced by concave surfaces of the same radius of curvature