Discussion
Planets do not twinkle because
Answer: D
Because planets are nearer the earth and so present an extended disc rather than a point.
A star is effectively a point source, so the whole of its light is deflected together by a turbulent air cell and the brightness flickers. A planet's disc is a collection of many such points, and their random fluctuations average out, so the light appears steady.
No comment is present. Be the first to comment.
Loading…
Post your comment
Please log in or register to post a comment.
Examination Categories
- SSC Exams
- Banking Exams
- Teaching Exams
- Civil Services Exams
- Railways Exams
- Engineering Recruitment Exams
- Defence Exams
- State Government Exams
- Police Exams
- Insurance Exams
- Nursing Exams
- Other Government Exams
- NRA CET
- PG Entrance Exams
- Campus Placement
- MBA Entrance Exams
- CUET and UG Entrance
- Judiciary Exams
- Regulatory Body Exams
- Software Development