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 6
IT DEPENDS ON THE SIZE OF THE STAR!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! DISTANCE DOES NOT MATTER LIKE HOW ASHWINI HAS WRITTEN HERE!!!!!!!!!!!!!!!!!!!!!
Ans 2:
Class : Class 6
Ans 3:
Class : Class 5
Answer is B.
Ans 4:
Class : Class 4
Ans 5:
Class : Class 6
it is true that some stars are nearer to sun, but it does not mean that the star it is brighter. Betelgeuse is the red supergiant and visible to us but its far away and alpha century is just 4 light years away from the earth, but it is not the brightest.I think the organization could solve he problem
Ans 6:
Class : Class 6
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.