Question

Q.16 What is the weight of body at centre of earth?
Q.17 Calculate degree of freedom for linear triatomic molecule.
Q.18 What do you mean by Gross error?
Q.19 Write properties of medium required for wave propagation.
Q.20 A spring of spring constant k is cut into three equal parts. What is spring constant of each part
OR
At what point velocity of a body is zero but acceleration of body is not zero? 1x20=20​

Answer 1

Answer:

Q16:- WEIGHT of body is zero at center of earth

Answer 2

Answer:

16. The weight of a body at the centre is zero.

18. Error by a large numerical value is called gross error.

19. The medium should have mass and occupy space. It can be any medium other than vacuum.

20. Motion around a circular path i.e. Circular motion.

Hope this helps.

Please follow me and mark me as the brainliest answer.