The twinkling of a star is due to :
- A. atmospheric reflection of starlight.
- B. atmospheric refraction of starlight. ✓
- C. continuous change in the position of the star.
- D. oscillation of starlight.
Correct Answer: B. atmospheric refraction of starlight.
Explanation
The twinkling of stars is caused by the atmospheric refraction of starlight as it passes through layers of Earth's atmosphere with varying optical densities.
Related questions on Physics
- The rule to determine the direction of a current induced in a coil due to its rotation in a magnetic field is :
- A car travels a total distance L. It travels half the distance with speed v_1 and the other half with speed v_2. The average speed of th...
- The linear momentum of a particle is conserved if :
- When a stone tied to a string is whirled in a circle, the work done on it by the string :
- Assume 'A' does 500 J of work in 'x' minutes and 'B' does 1000 J of work in 20 minutes. If the power delivered by 'A' is P_1 and 'B' is $P...