CSIR-NET 2016
25. Consider the following statements:
Statement 1: the variation of the Earth's magnetic field is stronger during the day than that during the night
Statement 2: Magnetic materials become less magnetic on heating
A) statements I and II are true; II explains I
B) statements I and II are true; but II does not explains I
C) statements I and II are false
D) statements I is false; II is true
Solution
The variation of the Earth's magnetic field is stronger during the day than that during the night. And magnetic materials in the subsurface lost there magnetic property during heating.
Answer:B
Post a Comment
Post a Comment