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Earn 100

A refracting telescope consists of

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Important Questions on Optics

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IMPORTANT
Pathfinder NDA / NA National Defence Academy and Naval Academy Entrance Examination Physics>Chapter 8 - Optics>Practice Exercise>Q 53
The mirror used for the headlights of a car is
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IMPORTANT
Pathfinder NDA / NA National Defence Academy and Naval Academy Entrance Examination Physics>Chapter 8 - Optics>Practice Exercise>Q 54
Yellow colour light is used as fog light because yellow colour,
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IMPORTANT
Pathfinder NDA / NA National Defence Academy and Naval Academy Entrance Examination Physics>Chapter 8 - Optics>Practice Exercise>Q 55

The human eye is like a camera and, hence, it contains a system of lens. The eye lens forms,

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Pathfinder NDA / NA National Defence Academy and Naval Academy Entrance Examination Physics>Chapter 8 - Optics>Practice Exercise>Q 56
An object is placed at the focus of a concave mirror. The image will be,
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IMPORTANT
Pathfinder NDA / NA National Defence Academy and Naval Academy Entrance Examination Physics>Chapter 8 - Optics>Practice Exercise>Q 57
An optician prescribes a power of -0.5 D. The corresponding lens must be a,
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Pathfinder NDA / NA National Defence Academy and Naval Academy Entrance Examination Physics>Chapter 8 - Optics>Practice Exercise>Q 58
The spread of colours in a rainbow on sky is primarily due to:
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IMPORTANT
Pathfinder NDA / NA National Defence Academy and Naval Academy Entrance Examination Physics>Chapter 8 - Optics>Practice Exercise>Q 59
A beautiful rainbow in the sky is due to the,
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IMPORTANT
Pathfinder NDA / NA National Defence Academy and Naval Academy Entrance Examination Physics>Chapter 8 - Optics>Practice Exercise>Q 60
During sunrise and sunset, sun appears reddish-orange because,