Eating food during Eclipse

I heard that we ought not eat anything in eclipse hours. Is there any scientific reason for that? Tejaswini  asked Answer: There is no scientific reason behind it. Earlier it was thought that more harmful rays are reaching earth from sun at the time of eclipse. But actually it is less at the time of eclipse as…… Continue reading Eating food during Eclipse

Selected Physics questions for SA1 for Class 9

Velocity time graph of a body is shown in the diagram below. What conclusion can be drawn about the velocity of the body from the graph? The value of G on earth’s surface is 6.67 x 10 -11 Nm2/kg2. What is its value on the surface of moon? A perso…