General Physica...

Which one of the following is an object with such a strong gravitational field that even light cannot escape from its surface?

A very small, hot star, the last stage in the life cycle of a star like the Sun is ________.

According to Big Bang Theory, our universe sprang into existence as 'singularity' around 13.7 billion years ago. Who proposed Big Bang Theory?

Which one among the following statements about the International Date Line is not correct?

Consider the following statements:
(1) On 21st June, more solar radiation reaches the top of the Earth's surface above the poles than above the equator.
(2) At the North pole, the Sun rises above the horizon on 20th March and day remains for 6 months until it sets on 22nd September.
Which of the statements given above is/are correct?

Consider the following statements:
(1) The part of the Sun that we can see is known as Photosphere.
(2) The outer most part of the Sun, which is visible only at the time of a solar eclipse is known as Corona.
Which of the statements given above is/are correct?

Why do we have a leap year every four years?

A storm of hot atoms which dissipates from the photosphere of the Sun, overcomes its gravity and goes into the outer space, is known as ________.

Earthquakes are caused by ____________.

Which parts of the Earth's surface experience least variation in incoming solar radiation throughout the year?