JEE Main 2021 (Online) 27th August Evening Shift | Ray & Wave Optics Question 81 | Physics

JEE Main 2021 (Online) 27th August Evening Shift

MCQ (Single Correct Answer)

-1

Curved surfaces of a plano-convex lens of refractive index $$\mu$$₁ and a plano-concave lens of refractive index $$\mu$$₂ have equal radius of curvature as shown in figure. Find the ratio of radius of curvature to the focal length of the combined lenses.

JEE Main 2021 (Online) 27th August Evening Shift Physics - Ray & Wave Optics Question 81 English

JEE Main 2021 (Online) 27th August Evening Shift Physics - Ray & Wave Optics Question 81 English

$${1 \over {{\mu _2} - {\mu _1}}}$$

$${\mu _1} - {\mu _2}$$

$${1 \over {{\mu _1} - {\mu _2}}}$$

$${\mu _2} - {\mu _1}$$

JEE Main 2021 (Online) 27th August Evening Shift

MCQ (Single Correct Answer)

-1

The light waves from two coherent sources have same intensity I₁ = I₂ = I₀. In interference pattern the intensity of light at minima is zero. What will be the intensity of light at maxima?

I₀

2 I₀

5 I₀

4 I₀

JEE Main 2021 (Online) 27th August Morning Shift

MCQ (Single Correct Answer)

-1

An object is placed beyond the centre of curvature C of the given concave mirror. If the distance of the object is d₁ from C and the distance of the image formed is d₂ from C, the radius of curvature of this mirror is :

$${{2{d_1}{d_2}} \over {{d_1} - {d_2}}}$$

$${{2{d_1}{d_2}} \over {{d_1} + {d_2}}}$$

$${{{d_1}{d_2}} \over {{d_1} + {d_2}}}$$

$${{{d_1}{d_2}} \over {{d_1} - {d_2}}}$$

JEE Main 2021 (Online) 27th August Morning Shift

MCQ (Single Correct Answer)

-1

Find the distance of the image from object O, formed by the combination of lenses in the figure :

JEE Main 2021 (Online) 27th August Morning Shift Physics - Ray & Wave Optics Question 83 English