1
JEE Main 2022 (Online) 28th June Evening Shift
+4
-1

In Young's double slit experiment performed using a monochromatic light of wavelength $$\lambda$$, when a glass plate ($$\mu$$ = 1.5) of thickness x$$\lambda$$ is introduced in the path of the one of the interfering beams, the intensity at the position where the central maximum occurred previously remains unchanged. The value of x will be :

A
3
B
2
C
1.5
D
0.5
2
JEE Main 2022 (Online) 28th June Morning Shift
+4
-1

The refracting angle of a prism is A and refractive index of the material of the prism is cot (A/2). Then the angle of minimum deviation will be -

A
180 $$-$$ 2A
B
90 $$-$$ A
C
180 + 2A
D
180 $$-$$ 3A
3
JEE Main 2022 (Online) 28th June Morning Shift
+4
-1

The aperture of the objective is 24.4 cm. The resolving power of this telescope, if a light of wavelength 2440 $$\mathop A\limits^o$$ is used to see th object will be :

A
8.1 $$\times$$ 106
B
10.0 $$\times$$ 107
C
8.2 $$\times$$ 105
D
1.0 $$\times$$ 10$$-$$8
4
JEE Main 2022 (Online) 27th June Evening Shift
+4
-1

A convex lens has power P. It is cut into two halves along its principal axis. Further one piece (out of the two halves) is cut into two halves perpendicular to the principal axis (as shown in figures). Choose the incorrect option for the reported pieces.

A
Power of $${L_1} = {P \over 2}$$
B
Power of $${L_2} = {P \over 2}$$
C
Power of $${L_3} = {P \over 2}$$
D
Power of L1 = P
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