Why does sun appears oval

Correct answer is option 'D'. Can you explain this answer? The Questions and Answers of Why does Sun appear slightly oval shaped at morning and evening? If the answer is not available please wait for a while and a community member will probably answer this soon. You can study other questions, MCQs, videos and tests for Class 10 on EduRev and even discuss your questions like Why does Sun appear slightly oval shaped at morning and evening?

Apart from being the largest Class 10 community, EduRev has the largest solved Question bank for Class Upgrade to Infinity. By continuing, I agree that I am at least 13 years old and have read and agree to the terms of service and privacy policy. For Your Perfect Score in Class The Best you need at One Place. Start Your Infinity Experience. Forgot Password. Enter OTP. Kuldeep Kuldeep. Incoming rays from the Sun curve downwards so that it appears higher in the sky than it really is.

The Moon and stars and the whole sky are similarly raised and astronomical observations are routinely corrected for "atmospheric refraction". The effect is small except near to the horizon when the rays are literally bent a little around the curve of the Earth. When the lower limb of the Sun just touches the sea horizon the whole Sun has actually already set.

Objects closer to the horizon are raised upwards most and the lower limb of the Sun is raised more than the top making it appear oval. The blue and green images of the sun are raised more than the red. The sun does appear to be larger because we can compare it to objects on the horizon when is rising or setting. This is an optical illusion that makes the sun appear larger. Keep Your Eyes Safe! While sunsets are lovely, do be careful observing them. It is dangerous to stare directly at the Sun, even during sunrise or sunset.

When using equipment that magnifies the sun, such as binoculars, a telescope, or even a telephoto lens, the time it takes to damage your eyes is much shorter. Back in , Samoa took the decision to move position on the international dateline. The sun near the horizon appears flattened at sunset and sunrise. This is caused by the refraction of light through the atmosphere.

As the sun sets, the light emitted must pass through an increasingly thick layer of air, which tends to bend the light rays away from the horizon.