JEE Main 2013 (Offline) | Ray & Wave Optics Question 256 | Physics

JEE Main 2013 (Offline)

MCQ (Single Correct Answer)

-1

Diameter of a plano-convex lens is $$6$$ $$cm$$ and thickness at the center is $$3mm$$. If speed of light in material of lens is $$2 \times {10^8}\,m/s,$$ the focal length of the lens is

$$15$$ $$cm$$

$$20$$ $$cm$$

$$30$$ $$cm$$

$$10$$ $$cm$$

JEE Main 2013 (Offline)

MCQ (Single Correct Answer)

-1

Two coherent point sources $${S_1}$$ and $${S_2}$$ are separated by a small distance $$'d'$$ as shown. The fringes obtained on the screen will be JEE Main 2013 (Offline) Physics - Ray & Wave Optics Question 249 English

JEE Main 2013 (Offline) Physics - Ray & Wave Optics Question 249 English

points

straight lines

semi-circles

concentric circles

JEE Main 2013 (Offline)

MCQ (Single Correct Answer)

-1

The graph between angle of deviation $$\left( \delta \right)$$ and angle of incidence $$(i)$$ for a triangular prism is represented by

JEE Main 2013 (Offline) Physics - Ray & Wave Optics Question 248 English Option 1

JEE Main 2013 (Offline) Physics - Ray & Wave Optics Question 248 English Option 2

JEE Main 2013 (Offline) Physics - Ray & Wave Optics Question 248 English Option 3

JEE Main 2013 (Offline) Physics - Ray & Wave Optics Question 248 English Option 4

AIEEE 2012

MCQ (Single Correct Answer)

-1

In Young's double slit experiment , one of the slit is wider than other, so that amplitude of the light from one slit is double of that from other slit. If $${{\rm I}_m}$$ be the maximum intensity, the resultant intensity $${\rm I}$$ when they interfere at phase difference $$\phi $$ is given by :

$${{{I_m}} \over 9}\left( {4 + 5\cos \,\phi } \right)$$

$${{{I_m}} \over 3}\left( {1 + 2{{\cos }^2}\,{\phi \over 2}} \right)$$

$${{{I_m}} \over 3}\left( {1 + 4{{\cos }^2}\,{\phi \over 2}} \right)$$

$${{{I_m}} \over 9}\left( {1 + 8{{\cos }^2}\,{\phi \over 2}} \right)$$

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