Consider the following phenomena.1. Size of the Sun at dusk2. Colour of the Sun at dawn3. Moon being visible at dawn4. Twinkle of stars in the sky5. Polestar being visible in the sky Which of the above are optical illusions?

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Consider the following phenomena.<br />1. Size of the Sun at dusk<br />2. Colour of the Sun at dawn<br />3. Moon being visible at dawn<br />4. Twinkle of stars in the sky<br />5. Polestar being visible in the sky Which of the above are optical illusions?






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