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Motion and Measurement of Distances

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Choose the incorrect statement from the following

1 point

Distance between Delhi and Hyderabad is of order in km

Hundred centimetre make one metre

Option 3

A simple pendulum is used to measure the mass of a bob

Clear selection

What causes a moving body to resist a change in its state of motion?

1 point

Its acceleration

Its speed

Its inertia

Its weight

Clear selection

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

1 point

A train moving on a straight railway track

A freely falling stone

A coin moving over a carom board

All of the above

Clear selection

In circular motion the

1 point

Direction of motion is fixed

Direction of motion changes continuously

Acceleration is zero

Velocity is constant

Clear selection

Which of the following statements below should be used while using the symbol for a unit of a physical quantity?

1 point

The symbol named after scientist should have capital letter

They take plural forms

They can be written in full

They should be written only in the agreed symbols

Clear selection

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

1 point

Meter

Fixed unit

Constant unit

Standard unit

Clear selection

Figure shows a measuring cylinder before and after the immersion of an irregular solid object. If the mass of the object is 36 g, the density of the object is

1 point

Option 1

Option 2

Option 3

Option 4

Clear selection

An early device used for measuring time was

1 point

Watch with balance wheel

Pendulum clock

Sundial

Sand glass

Clear selection

When a drill bores a hole in a piece of wood, it describes (i) Rotatory motion (ii) Translatory motion(iii) Curvilinear motion(iv) Oscillatory motion

1 point

(iii) & (iv)

(i) & (ii)

(i) & (iii)

(i) & (iv)

Clear selection

Which of the following is the unit of measuring the distance of stars from the Earth?

1 point

Nautical miles

Light year

Meter

Kilometer

Clear selection

The average length of the three paper clips is

1 point

1.5 cm

2.2 cm

2.5 cm

3.0 cm

Clear selection

Raj applied a force to make the smallest gear P, rotate in a clockwise direction as shown. In whichdirection will gears Q, R and S rotate? The given diagram shows four gears.

1 point

Clear selection

The motion in which all points of the body move through the same distance in the same time is

1 point

Rotatory motion

Linear motion

Circular motion

Translatory motion

Clear selection

A pendulum swings backwards and forwards passing through Y, the middle point of the oscillation. The first time the pendulum passes through Y, a stopwatch is started. The twenty-first time the pendulum pass through Y, the stopwatch is stopped. The reading is T. What is the period of the pendulum?

1 point

T/40

T/21

T/20

T/10

Clear selection

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

1 point

20 cm

1 mm

0.1 mm

0.5 mm

Clear selection

Figure shows a measuring cylinder before and after the immersion of an irregular solid object. The volume of the object is

1 point

Option 1

Option 2

Option 3

Option 4

Clear selection

Submultiple micro is equal to

1 point

1/1000000

1/100000

1/10000000

1/1000

Clear selection

Statement 1: The displacement of a body may be zero, though distance can be finite. Statement 2: If a body moves such that finally it arrives at initial point, then displacement is zero while distance is finite.

1 point

Both statements 1 and 2 are true and statement 2 is the correct explanation of statement 1.

Both statements 1 and 2 are true but statement 2 is not the correct explanation of statement 1.

Statement 1 is true and statement 2 is false.

Statement 1 is false and statement 2 is true.

Clear selection

Match the following and select the correct option from the codes given below.

1 point

(a) - (ii), (b) - (i), (c) - (iv), (d) - (iii)

(a) - (iii), (b) - (ii), (c) - (i), (d) - (iv)

(a) - (i), (b) - (iv), (c) - (iii), (d) - (ii)

(a) - (iv), (b) - (iii), (c) - (ii), (d) - (i)

Clear selection

What happens to the air in a car tyre as a result of a motorway journey?

1 point

The temperature remains the same and the pressure increases

The temperature decreases and the pressure increases

The temperature and pressure both increase

The temperature remains the same and the pressure decreases

Clear selection

Which of the following is/are examples of rotatory motion?

1 point

Motion of the blades of the ceiling fan

Motion of the potter’s wheel

Motion of planets around the sun

All of these

Clear selection

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

1 point

Check whether the instruments used are inaccurate

List the measurements taken in a table

Take the average and reduce the possibility of error

Get more than one answer

Clear selection

The smallest time measured by a wrist watch accurately is

1 point

1 milli second

60 seconds

1 second

1 hour

Clear selection

Spinning of a top is an example of

1 point

Rotatory motion

Translatory motion

Vibratory motion

Oscillatory motion

Clear selection

Different size bags are required to pack separately one kilogram each of cotton, potatoes and iron chunks. Which property of matter explains this?

1 point

Temperature

Density

Mass

Pressure

Clear selection

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