Question

2. With regards to type of motion, which of the following statements is tru
(A) Swinging of arms of a soldier while marching is oscillatory.
(B) The beating of our heart and expansion/contraction of lungs are
(C) Motion of a spinning top is circular motion.
(D) A freely falling body undergoes rectilinear motion.
3. Which of the following statements is/are incorrect ?
(A) Arm length or a footstep was used as a unit of length in olden d
(B) The needle of a sewing machine undergoes circular motion.
(C) Motion of a body thrown upward at an angle is rectilinear mot
(D) Multiples and submultiples of a unit are used for measurement of bigge
4.
Nagender is playing soccer. The motion exhibited by the ball is/
(A) curvilinear. (B) circular. (C) oscillatory. (D) non-unif
5
.
Which of the following is/are in periodic motion ?​

Answer 1

Answer:

2:A,C

3:A

4:D

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