Question Text
Question 3 :
Three coplanar forces acting on a body keep it in equilibrium. They should therefore be_______________
Question 5 :
On loading the prong of a tuning form with wax its frequency____________________
Question 6 :
Fundamental frequency of stationary waves in open pipe is ______________ times the frequency in closed pipe
Question 7 :
If a diffraction grating is placed in the path of a light beam it reveals______________
Question 12 :
Why should a resistance be introduced in a circuit in series deliberately
Question 13 :
If a material object moves with speed of light its mass becomes ________________
Question 14 :
A wire obeys Hooks law is of length 11 when it is in equilibrium under a tension F1. Its length becomes 12 when the tension is increased to F2. The energy stored in the wire during this process is____________________
Question 16 :
A stone is whirled in a vertical circle at the end of a string. When the stone is at the highest position the tension in the string is______________
