JEE Main 2019 (Online) 12th January Morning Slot | Ray & Wave Optics Question 182 | Physics

JEE Main 2019 (Online) 12th January Morning Slot

MCQ (Single Correct Answer)

-1

A light wave is incident normally on a glass slab of refractive index 1.5. If 4 % of light gets reflected and the amplitude of the electric field of the incident light is 30 V/m, then the amplitude of the electric field for the wave propagating in the glass medium will be :

6 V/m

10 V/m

30 V/m

24 V/m

JEE Main 2019 (Online) 12th January Morning Slot

MCQ (Single Correct Answer)

-1

A point source of light, S is placed at distance L in front of the centre of plane mirror of width d which is hanging vertically on a wall. A man walks in front of the mirror along a line parallel to the mirror, at a distance 2L as shown below. The distance over which the man can see the image of the light source in the mirror is

JEE Main 2019 (Online) 12th January Morning Slot Physics - Ray & Wave Optics Question 183 English

d/2

JEE Main 2019 (Online) 12th January Morning Slot

MCQ (Single Correct Answer)

-1

What is the position and nature of image formed by lens combination shown in figure ? (f₁, f₂ are focal lengths)

JEE Main 2019 (Online) 12th January Morning Slot Physics - Ray & Wave Optics Question 182 English

JEE Main 2019 (Online) 12th January Morning Slot Physics - Ray & Wave Optics Question 182 English

$${{20} \over 3}$$ cm from point B at right, real

70 cm from point B at right ; real

40 cm from point B at right; real

70 cm from point B at left ; virtual

JEE Main 2019 (Online) 11th January Evening Slot

MCQ (Single Correct Answer)

-1

In a double-slit experiment, green light (5303$$\mathop A\limits^ \circ $$) falls on a double slit having a separation of 19.44 $$\mu $$m and awidht of 4.05 $$\mu $$m. The number of bright fringes between the first and the second diffraction minima is :