Motion and Measurement of Distances Test

Result

Motion and Measurement of Distances Test - 16

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Question 1
1 / -0

A __________ unit does not change with respect to space and time.

A
Derived

B
Standard

C
Regular

D
Large

Solution

A unit is said to be a standard if it does not change with respect to space and time.
For example, the time has a standard unit 'second'.
Question 2
1 / -0

If a body does not change its position with respect to its surroundings, the body is said to be _________.

A
at rest

B
in motion

C
in free fall

D
none of these

Solution

The body is said to be at rest if a body does not change its position with respect to its surrounding.
Question 3
1 / -0

Which one of these units would you use to measure the length of a handbag?

A
Centimetres

B
Pounds

C
Miles

D
None

Solution

A handbag is not a very big object. The dimension of a handbag is of the order of few centimetres.
Question 4
1 / -0

For measuring a curve line which of the following can be used?

A
A non-stretchable string

B
A thread with a knot at one of it's ends.

C
A straight rod

D
Both A and B

Solution

Since the line to be measured is curved it can not be measured by a straight rod . It can be measured by any scale which can bent and not stretch.So Either a non-stretchable string or a thread with a knot at one of its ends can be used for measuring the curved line. But a curved line cannot be measured with a straight rod.
Question 5
1 / -0

Someone is weighing some box as 25 ____. Fill in the blank with appropriate answer.

A
Kilogram

B
Meter

C
Seconds

D
Joules

Solution

Kilogram is the measuring unit of the weight of the object.
So, the correct answer is option A.
Question 6
1 / -0

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

A
Motion of a molecule of a gas

B
Motion of a stone falling from a certain height

C
Motion of a swing

D
Motion of a clock hand

Solution

The motion of the stone falling from a certain height is an example of linear motion as it moves in a straight line.
Gas molecules have random motion. The swing and clock hand are in periodic motion.
Question 7
1 / -0

Name the type of motion in which a body moves along a straight path.

A
Linear motion

B
Rotational motion

C
Brownian motion

D
Circular motion

Solution

The body moves along a straight path in linear motion.
Question 8
1 / -0

For measuring a pencil box which of the following is suitable?

A
Long 30 cm scale

B
Small 15 cm scale

C
A tape of 5m length

D
None of the above

Solution

A pencil box is not a very big object. Its dimension is of the order of few centimetres. Thus, small 15 cm metre scale is suitable for measuring a pencil box.
Question 9
1 / -0

Vinita wants to measure the length of the snake shown. Which of the following she should use to get the exact length of the snake?

A

B

C

D

Solution

The length of a curve line can be measured with a thread but cannot be measured with steel rod, metre scale and measuring tape. Since, the shape of the snake is a curved line as shown, thus its length can be measured accurately with a thread.
Question 10
1 / -0

What we say when a body remains in one position for a long time?

A
Motion

B
Rest

C
Stationary

D
None of the above

Solution

A body is said to be at rest if it remains in one position for a long time.