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Subject :NSO    Class : Class 5

In the night time, Urvashi observes that some stars appear to shine more brightly than the others. Which of the following can be a possible reason for her observation?

AThe bigger the star, the brighter it will be.
BSome of these stars are nearer to Earth.
CThe stars are illuminating some special light effects.
DSome stars can shine more brightly than the others.


Ans 1:

Class : Class 4

Ans 2:

Class : Class 5
Answer is B.

Ans 3:

Class : Class 5
Alpha centauri is not the brightest star in the night sky although it is the second closest star to the earth after the sun. Sirius-A is the brightest star in the night sky, still it is further from the earth than alpha centauri.

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