# ICSE Worksheet for chapter-2 Measurements class 9

## Find ICSE Worksheet for chapter-2 Measurements class 9

CLASS-9

BOARD: ICSE

Physics Worksheet - 2

TOPIC: Heat

For other ICSE Worksheet for class 9 Science check out main page of Physics Wallah.

SUMMARY

• Least count of measuring instrument, Measurement of length with metre scale
• Principle of vernier, Vernier callipers, Principle of a screw, Screw gauge
• Measurement of volume, Measurement of time
• Measurement of mass , A beam balance for comparison of masses

#### SECTION 1 – OBJECTIVE

1. The diameter of the wire can be accuratels measured by
1. Vernier calipers
2. meter rule
3. A screw gauge
4. any of these
2. The least count of meter rule is
1. 1 cm
2. (b) 1 m
3. (c) 0.1 cm
4. (d) 0.01 cm
3. __________ of an instrument is the smallest measurement that can be taken accurately with it.
1. Least count
2. length
3. Shape
4. Not
4. The distance moved by the screw along its axis in one complete rotation of its head is
1. Pitch
2. least count
3. Measurement
4. Not
5. In screw gauge, the function of ratchet is
1. to make main scale
2. to mark circular scale
3. to rotate the screw
6. The least count of stop watch generally
1. 1 s
2. 1 min
3. 0.5s
4. 1 h
7. 7. Find the order of magnitude of mass of Pluto if its radius is 106 m and average density is 10 3kg/m3
1. 1012Kg
2. 1021 kg
3. 1030Kg
4. Not
8. Which among the following instruments is most accurate ?
1. Screw gauge
2. Vertices caliper
3. Metre scale
4. Meanining tape
9. Find the least count of a screw gauge whose head scale is divided into 100 division and moves 10 mm for 10 rotations of the head
1. 0.1 mm
2. 1 mm
3. 0.001 cm
4. 1 cm
10. 10. If the length of second pendulum on a planet is 2 m, then the acceleration due gravity on the surface of the planet is
1. 9.8 m/s2
2. 19.6 m/s2
3. 2 m/s2
4. 2 m/s2

#### SECTION II – SUBJECTIVE

1. Draw the neat labeled diagram of the screw gauge.

2. Explain the errors in vernier calipers.

3. Explain any three instruments used to measure volume of liquid.

4. Compare the time period of two pendulums of length 1 m and 9 m.

5. Explain the principle of beam balance along with a diagram.

### Solutions: to worksheet-2 Topic-Measurements

#### Objective Problems:

 1. (c) 2. (c) 3. (a) 4. (a) 5. (c) 6. (c) 7. (b) 8. (a) 9. (c) 10. (c)