1
JEE Main 2023 (Online) 12th April Morning Shift
+4
-1 An ice cube has a bubble inside. When viewed from one side the apparent distance of the bubble is $$12 \mathrm{~cm}$$. When viewed from the opposite side, the apparent distance of the bubble is observed as $$4 \mathrm{~cm}$$. If the side of the ice cube is $$24 \mathrm{~cm}$$, the refractive index of the ice cube is

A
$$\frac{3}{2}$$
B
$$\frac{4}{3}$$
C
$$\frac{2}{3}$$
D
$$\frac{6}{5}$$
2
JEE Main 2023 (Online) 11th April Evening Shift
+4
-1 When one light ray is reflected from a plane mirror with $$30^{\circ}$$ angle of reflection, the angle of deviation of the ray after reflection is :

A
$$140^{\circ}$$
B
$$130^{\circ}$$
C
$$120^{\circ}$$
D
$$110^{\circ}$$
3
JEE Main 2023 (Online) 11th April Morning Shift
+4
-1 The critical angle for a denser-rarer interface is $$45^{\circ}$$. The speed of light in rarer medium is $$3 \times 10^{8} \mathrm{~m} / \mathrm{s}$$. The speed of light in the denser medium is:

A
$$2 .12 \times 10^{8} \mathrm{~m} / \mathrm{s}$$
B
$$5 \times 10^{7} \mathrm{~m} / \mathrm{s}$$
C
$$\sqrt{2} \times 10^{8} \mathrm{~m} / \mathrm{s}$$
D
$$3.12 \times 10^{7} \mathrm{~m} / \mathrm{s}$$
4
JEE Main 2023 (Online) 10th April Morning Shift
+4
-1 An object is placed at a distance of 12 cm in front of a plane mirror. The virtual and erect image is formed by the mirror. Now the mirror is moved by 4 cm towards the stationary object. The distance by which the position of image would be shifted, will be

A
4 cm towards mirror
B
2 cm towards mirror
C
8 cm away from mirror
D
8 cm towards mirror
JEE Main Subjects
Physics
Mechanics
Electricity
Optics
Modern Physics
Chemistry
Physical Chemistry
Inorganic Chemistry
Organic Chemistry
Mathematics
Algebra
Trigonometry
Coordinate Geometry
Calculus
EXAM MAP
Joint Entrance Examination