A magnetic needle suspended by a silk thread is vibrating in the earths magnetic field, If the temperature of the needle is increased by 500°C, then-
A. time period decreases
B. time period remains unchanged
C. time period increases
D. the needle stops vibrating
Answer:C
A magnetic needle suspended by a silk thread is vibrating in the earths magnetic field, If the temperature of the needle is increased by 500°C, then-
A. time period decreases B. time period remains unchanged C. time period increases D. the needle stops vibrating