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JEE Advanced 2007Paper 1
Exam
JEE Advanced
Year
2007
Paper
Paper 1
Subject
Physics
Chapter
Ray Optics

JEE Advanced 2007 · Paper 1 · Physics · Ray Optics

A ray of light travelling in water is incident on its surface open...

A ray of light travelling in water is incident on its surface open to air. The angle of incidence is θ\theta, which is less than the critical angle. Then there will beA ray of light travelling in water is incident on its surface open to air. The angle of incidence is θ , which is less

Options

  1. Aonly a reflected ray and no refracted ray
  2. Bonly a refracted ray and no reflected ray
  3. Ca reflected ray and refracted ray and the angle between them would be less than 180∘−2θ180^{\circ}-2 \theta
  4. Da reflected ray and a refracted ray and the angle between them would be greater than 180∘−2θ180^{\circ}-2 \theta

Correct answer

C. a reflected ray and refracted ray and the angle between them would be less than 180∘−2θ180^{\circ}-2 \theta

Step-by-step solution

Since θ<θc\theta < \theta_c, both reflection and refraction will take place. From the figure we can see that angle between reflected and refracted rays α\alpha is less than 180∘−2θ180^{\circ}-2 \theta. ∴\therefore Option (c) is correct.A ray of light travelling in water is incident on its surface open to air. The angle of incidence is θ , which is less
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