Teaching BPSC बिहार माध्यमिक TGT (9 to 10) शिक्षक भर्ती 4.0 Mock Test General Science Physics Heat and Transfer
Pendulum clocks become slow in summer because
1
Days in summer are large.
2
Of the friction in the coil.
3
The length of the pendulum increases.
4
More than one of the above
5
None of the above