1
JEE Main 2021 (Online) 27th July Evening Shift
+4
-1
The expected graphical representation of the variation of angle of deviation '$$\delta$$' with angle of incidence 'i' in a prism is :
A
B
C
D
2
JEE Main 2021 (Online) 27th July Morning Shift
+4
-1
The relative permittivity of distilled water is 81. The velocity of light in it will be :

(Given $$\mu$$r = 1)
A
4.33 $$\times$$ 107 m/s
B
2.33 $$\times$$ 107 m/s
C
3.33 $$\times$$ 107 m/s
D
5.33 $$\times$$ 107 m/s
3
JEE Main 2021 (Online) 27th July Morning Shift
+4
-1
In Young's double slit experiment, if the source of light changes from orange to blue then :
A
the central bright fringe will become a dark fringe.
B
the distance between consecutive fringes will decrease.
C
the distance between consecutive fringes will increases.
D
the intensity of the minima will increase.
4
JEE Main 2021 (Online) 25th July Evening Shift
+4
-1
A prism of refractive index $$\mu$$ and angle of prism A is placed in the position of minimum angle of deviation. If minimum angle of deviation is also A, then in terms of refractive index
A
$$2{\cos ^{ - 1}}\left( {{\mu \over 2}} \right)$$
B
$${\sin ^{ - 1}}\left( {{\mu \over 2}} \right)$$
C
$${\sin ^{ - 1}}\left( {\sqrt {{{\mu - 1} \over 2}} } \right)$$
D
$${\cos ^{ - 1}}\left( {{\mu \over 2}} \right)$$
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