JEE Main 2021 (Online) 26th August Morning Shift | Ray & Wave Optics Question 88 | Physics

JEE Main 2021 (Online) 26th August Morning Shift

MCQ (Single Correct Answer)

-1

Car B overtakes another car A at a relative speed of 40 ms^$$-$$1. How fast will the image of car B appear to move in the mirror of focal length 10 cm fitted in car A, when the car B is 1.9 m away from the car A?

4 ms^$$-$$1

0.2 ms^$$-$$1

40 ms^$$-$$1

0.1 ms^$$-$$1

JEE Main 2021 (Online) 27th July Evening Shift

MCQ (Single Correct Answer)

-1

The expected graphical representation of the variation of angle of deviation '$$\delta$$' with angle of incidence 'i' in a prism is :

JEE Main 2021 (Online) 27th July Evening Shift Physics - Ray & Wave Optics Question 90 English Option 1

JEE Main 2021 (Online) 27th July Evening Shift Physics - Ray & Wave Optics Question 90 English Option 2

JEE Main 2021 (Online) 27th July Evening Shift Physics - Ray & Wave Optics Question 90 English Option 3

JEE Main 2021 (Online) 27th July Evening Shift Physics - Ray & Wave Optics Question 90 English Option 4

JEE Main 2021 (Online) 27th July Morning Shift

MCQ (Single Correct Answer)

-1

The relative permittivity of distilled water is 81. The velocity of light in it will be :

(Given $$\mu$$_r = 1)

4.33 $$\times$$ 10⁷ m/s

2.33 $$\times$$ 10⁷ m/s

3.33 $$\times$$ 10⁷ m/s

5.33 $$\times$$ 10⁷ m/s

JEE Main 2021 (Online) 27th July Morning Shift

MCQ (Single Correct Answer)

-1

In Young's double slit experiment, if the source of light changes from orange to blue then :

the central bright fringe will become a dark fringe.

the distance between consecutive fringes will decrease.

the distance between consecutive fringes will increases.

the intensity of the minima will increase.

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