The power of small fan is:
40 W
50 W
60 W
80 W
Power of hair dryer is:
1000 W
750 W
10 W
75 W
What is fitted in telephone receiver:
Electromagnet
Diaphragm
Both a and b
None
The distance between two consecutive waves compressions or rarefactions is called:
Focal length
Wave length
Frequency
Time period
At extreme position potential energy of the pendulum is:
Maximum
Minimum
Zero
