General Physica...

Consider the following statements:
(1) Stars are born in nebulae.
(2) Stars expand as they grow old.
(3) It will eventually collapse and explode.
Which of the statements given above is/are correct?

Which of the following is correctly matched?

Consider the following statements:
(1) Mariner-10 and Messenger are the artificial satellites which surveyed the surface of the Mercury.
(2) Venus is often considered as 'Earth's Twin' because of proximity in size, mass and density to Earth.
Which of the statements given above is/are correct?

If you stay in Bhopal and its 1st day of year 2017. then arrange the sequences of Earth-Sun alignment.

Consider the following statements:
(1) For those living outside the tropics the noon. Sun will never shine directly overhead.
(2) The noon Sun shines directly overhead on the Earth at varying latitudes on different days- between 23.5 degrees South latitude and 23.5 degrees North latitude.
Which of the statements given above is/are correct?

Which one among the following is called terrestrial planet?

Consider the following statements:
(1) Duration of a solar day is exactly 24 hrs
(2) The duration of a Sidereal day is of about 23 hrs and 56 min.
Which of the statements given above is/are correct?

During the recent Venus transit (June 2012), the planet appeared as a tiny black circle moving on the Sun. The black colour on the Sun is because the planet _________.

21st March or 21st September, Sun aligns with Earth in some peculiar way.
Choose correct statement.
(1) One of them forms winter solstice, depending upon hemisphere.
(2) Equinoxes are take place only at tropic of cancer or capricorn depending upon Earth's inclination.
(3) Equinoxes imply equal days and nights.

Regarding seasonal changes, attempt the correct reason behind such changes.
(1) Revolution of Earth is the prime reason for season.
(2) On 23rd may, sun rays are concentrated on smaller area in Northern Hemisphere.
(3) In winter, oblique rays fall in Northern hemisphere for longer period of time.