| 1. | Read the following sentences carefully, and choose the incorrect one ? | |
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In refraction through a glass prism, the emergent ray is parallel to the incident ray.
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The angle between incident ray and emergent ray is called “angle of deviation”.
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When a ray of light passes through a prism, it bends towards the thicker part of the prism.
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None of the above.
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Report Question| 2. | The image formed on the retina of the human eye is ? | |
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virtual and erect
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real and erect
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real and inverted
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virtual and inverted
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| 3. | Having two eyes facilitates in A : Increasing the field of view B : Bringing three-dimensional view C : Developing the concept of distance/ size Then the correct option is/are ? | |
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B only
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A, B and C
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A and B only
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A only
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| 4. | A student sitting on the last bench in the class cannot read the writing on the blackboard clearly but he can read the book lying on his desk clearly. which of the following statement is correct about the student ? | |
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The far point of his eyes has come closer to him.
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The far point of his eyes has receded away.
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The near point of his eyes has come close to him.
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The near point of his eyes has receded away.
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| 5. | The least distance of distinct vision for an eye lens is caused by the action of the ? | |
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2.5 m
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2.5 cm
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25 m
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25 cm
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| 6. | The human eye forms the image of an object at its ? | |
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Cornea
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Retina
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Pupil
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Iris
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| 7. | The muscular diaphragm that controls the sides of pupil is ? | |
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Iris
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Retina
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Ciliary muscles
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Cornea
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| 8. | Which of the following phenomenon contributes significantly to the reddish appearance of the sun at sunrise or sunset ? | |
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Reflection of light from the earth
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Total internal Reflection
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Scattering of light
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Dispersion of light
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| 9. | The change in the focal length of human eye is caused due to ? | |
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Iris
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Cornea
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Ciliary muscles
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Pupil
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| 10. | The image formed by retina of human eye is ? | |
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Permanent
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Blurred
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temporary
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None
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