Motion and Measurement of Distances Worksheet-1

Motion and Measurement of Distances Worksheet-1

1. The motion in which all points of the body move through the same distanced in the same time is

(a) Rotatory motion                     (b) Linear motion

(c) Circular motion                      (d) Translatory motion

2. Spinning of a top is an example of

(a) Rotatory motion                     (b) Translatory motion

(c) Vibratory motion                   (d) Oscillatory motion

3. Choose the incorrect statement from the following.

(a) Distance between Delhi and Hyderabad is of order in km

(b) Hundred centimeter make one meter

(c) 1 quintal is equal to 100 k g

(d) A simple pendulum is used to measure the mass of a bob.

4. An early device used for measuring time was

(a) Watch with balance wheel

(b) Pendulum clock

(c) Sundial

(d) Sand glass

5. The reason why scientists repeat measurements they take during experiments is so that they can.

(a) Check whether the instruments used are inaccurate

(b) List the measurements taken in a table

(c) Take the average and reduce the possibility of error

(d) Get more than one answer

6. A unit which always has the same measure for every person is

(a) Meter                                        (b) Fixed unit

(c) Constant unit                          (d) Standard unit

7. The motion of the arms of a soldier marching along the road is

(a) Circular                                    (b) Oscillatory

(c) Rotatory                                   (d) Non periodic

8. The smallest time measured by a wrist watch accurately is

(a) 1 milli second                          (b) 60 seconds

(c) 1 seconds                                  (d) 1 hour

9. Which of the following is/are examples of rectilinear motion?

(a) A train moving on a straight railway track

(b) A freely falling stone

(c) A coin moving over a carom board

(d) All of these

10. One centimeter on a scale is divided into 20 equal divisions. The least count of this scale is

(a) 20 cm                                       (b) 1 mm

(c) 0.1 mm                                     (d) 0.5 mm

Answer Key:

(1)–(d); (2)–(a); (3)–(d); (4)–(c); (5)–(c); (6)–(d); (7)–(b); (8)–(c); (9)–(d); (10)–(d)