1. Units of are typically used to describe the distance between Delhi and Mumbai.
(a) decameter
(b) metre are typically used to describe the distance between Delhi and Mumbai.
(c) centimetre
(d) kilometre
1. Units of are typically used to describe the distance between Delhi and Mumbai.
(a) decameter
(b) metre are typically used to describe the distance between Delhi and Mumbai.
(c) centimetre
(d) kilometre
Explanation:
(d) A kilometre.
In most cases, the distance between Delhi and Mumbai is given in kilometres.
2. Which of the subsequent doesn't explicitly describe a time interval?
(a) A day
(b) a second
(c) a second of school
(d) the time of the school's first bell
2. Which of the subsequent doesn't explicitly describe a time interval?
(a) A day
(b) a second
(c) a second of school
(d) the time of the school's first bell
Explanation:
(d): The time of the school's first bell
The school's first bell indicates a single moment in time rather than an interval of time.
3. The measuring scale that is typically included with a geometry box is shown. Which of the following measurements cannot be made with this scale once?
(a) 0.1m
(b) 0.15 m
(c) 0.2 m
(d) 0.05 m
3. The measuring scale that is typically included with a geometry box is shown. Which of the following measurements cannot be made with this scale once?
(a) 0.1m
(b) 0.15 m
(c) 0.2 m
(d) 0.05 m
Explanation:
(c): 0.2 m
Its length is 0.15 metres. If used only once, 0.2 m cannot be measured.
4. As illustrated in the image, a ribbon piece is placed along a 30 cm measuring scale and folded five times.
The length of the ribbon is between
(a) 1.15 m – 1.25 m
(b) 1.25 m – 1.35 m
(c) 1.50 m – 1.60 m
(d) 1.60 m – 1.70 m.
4. As illustrated in the image, a ribbon piece is placed along a 30 cm measuring scale and folded five times.
The length of the ribbon is between
(a) 1.15 m – 1.25 m
(b) 1.25 m – 1.35 m
(c) 1.50 m – 1.60 m
(d) 1.60 m – 1.70 m.
Explanation:
(b): 1.25 m – 1.35 m
The five-folded ribbon component in the aforementioned figure is
about 1.275 m length (27.5 - 2) cm 5.
5. Paheli travels from point A to point C along a straight path. She travels a specific distance AB in 20 minutes and the remaining distance BC in 30 minutes. After turning around, she travels the Same distance in 30 minutes and the remaining 20 minutes to her starting place. She travels the same route for five rounds. Paheli determines that her motion is either
(a) exclusively rectilinear
(b) exclusively periodic
(c) both rectilinear and periodic
(d) neither rectilinear nor periodic.
5. Paheli travels from point A to point C along a straight path. She travels a specific distance AB in 20 minutes and the remaining distance BC in 30 minutes. After turning around, she travels the Same distance in 30 minutes and the remaining 20 minutes to her starting place. She travels the same route for five rounds. Paheli determines that her motion is either
(a) exclusively rectilinear
(b) exclusively periodic
(c) both rectilinear and periodic
(d) neither rectilinear nor periodic.
Explanation:
(c): Both periodic and rectilinear.
Paheli is travelling in a straight path at a constant speed. Her motion is hence both periodic and rectilinear.
6. Bholu and Golu are engaged in athletic activity. They both begin sprinting from the same spot on the ground, point A, and travel simultaneously to point B by using the paths indicated by numbers 1 and 2, respectively, as shown in the image. Which of the following statements about the circumstance is true?
In comparison to Golu :
(a) Bholu travels farther at a slower speed
(b) farther at a faster speed
(c) farther at a slower speed
(d) shorter at a faster speed, and shorter at a higher speed.
6. Bholu and Golu are engaged in athletic activity. They both begin sprinting from the same spot on the ground, point A, and travel simultaneously to point B by using the paths indicated by numbers 1 and 2, respectively, as shown in the image. Which of the following statements about the circumstance is true?
In comparison to Golu :
(a) Bholu travels farther at a slower speed
(b) farther at a faster speed
(c) farther at a slower speed
(d) shorter at a faster speed, and shorter at a higher speed.
Explanation:
(b): greater speed over a longer distance
Longer than Path 2 is Path 1, which. Yet, as both Golu and Bholu arrived at point B simultaneously, Bholu's speed is greater than Golu's.
7. As shown in the image, position the four wooden stick pieces A, B, C, and D down the length of the 30 cm scale. Which one of them has a length of 3.4 cm?
(a) A
(b) B
(c) C
(d) D
7. As shown in the image, position the four wooden stick pieces A, B, C, and D down the length of the 30 cm scale. Which one of them has a length of 3.4 cm?
(a) A
(b) B
(c) C
(d) D
Explanation:
(c) C
The provided figure shows that stick C lies between 10.4 cm and 7 cm. The length is therefore (10.4 - 7) cm = 3.4 cm.
8. Which of the following figures best depicts how a block should be positioned on a scale to determine its length?
8. Which of the following figures best depicts how a block should be positioned on a scale to determine its length?
Explanation:
c): The object should be positioned on the scale so that its ends are between the marked readings.
9. To measure a length of 10 cm, you are given three scales, A, B, and C, as illustrated in the image.
Use the scale to measure the length correctly.
(a) A only
(b) B only
(c) C only
(d) Any of the three Scales
9. To measure a length of 10 cm, you are given three scales, A, B, and C, as illustrated in the image.
Use the scale to measure the length correctly.
(a) A only
(b) B only
(c) C only
(d) Any of the three Scales
Explanation:
(d) Any of the three Scales.
The three scales—A, B, and C—offer a length of 10 cm. It is possible to use any of the three scales.
10. Make the following changes:
(i) A swing's motion serves as an illustration of rectilinear motion.
(ii) 1m = 1000cm
10. Make the following changes:
(i) A swing's motion serves as an illustration of rectilinear motion.
(ii) 1m = 1000cm
Explanation:
(i) A swing's motion is not an instance of rectilinear motion. A swing's motion is an illustration of periodic motion since it repeats itself after a certain amount of time.
(ii) 1m = 100 cm. 100 units are used to split a metre (m).
11. Fill in the blanks.
(i) Motion of an object or a part of it around a fixed point is known as_______ motion.
(ii) A body repeating its motion after certain interval of time is in_______ motion.
(iii) In rectilinear motion, object moves a______ line______.
(iv) SI unit of length is_______.
11. Fill in the blanks.
(i) Motion of an object or a part of it around a fixed point is known as_______ motion.
(ii) A body repeating its motion after certain interval of time is in_______ motion.
(iii) In rectilinear motion, object moves a______ line______.
(iv) SI unit of length is_______.
Explanation:
(i) Circular
(ii) periodic
(iii)along with straight
(iv) metres
12. For each of the ensuing types of motion, give one example.
(i) Rectilinear
(ii) Circular
(iii) Periodic
(iv) Circular
12. For each of the ensuing types of motion, give one example.
(i) Rectilinear
(ii) Circular
(iii) Periodic
(iv) Circular
Explanation:
(i) Rectilinear - An apple going down vertically. Circular and periodic.
(ii) Circular - The movement of a marked point on a clock's hands.
(iii) Periodic - Swinging of a child.
(iv) Circular and regular - Fan blades that rotate.
13.
. 
A grille consisting of straight and curved iron bars is shown in the picture in figure. How would you calculate the length of the bars in this part so that the contractor might be paid?
13.
.
A grille consisting of straight and curved iron bars is shown in the picture in figure. How would you calculate the length of the bars in this part so that the contractor might be paid?
Explanation:
The length of the curved iron bars can be measured with the aid of thread first and then can be further measured using a scale because the grille is made up of straight and curved iron bars. With measuring tape, the straight bars can be measured.
14. In the word diagram that follows, identify the various types of motion.
14. In the word diagram that follows, identify the various types of motion.
Explanation:
15. A table's length was approximately 2 metres as measured by four kids. They each measured it in an own way.
(i) Sam measured it using a thread that was half a metre long.
(ii) With a 15-cm scale that she pulled out of her geometry box.
(iii) Reena used her hand span to calculate its size.
(iv) Salim used a 5 m measuring tape to take the measurement.
Who would determine the length with the greatest accuracy? Explain why you chose that response.
15. A table's length was approximately 2 metres as measured by four kids. They each measured it in an own way.
(i) Sam measured it using a thread that was half a metre long.
(ii) With a 15-cm scale that she pulled out of her geometry box.
(iii) Reena used her hand span to calculate its size.
(iv) Salim used a 5 m measuring tape to take the measurement.
Who would determine the length with the greatest accuracy? Explain why you chose that response.
Explanation:
(iv) Salim measured it with a 5 m measuring tape.
Salim would obtain the most precise length by using a 5 m measuring tape, which is longer than the table. He can therefore quickly and properly determine the length of the table.
16. Match the events related to motion in column I with the types of motions given in column II.
Column I
Column II
(a) A moving wheel of a sewing machine
(i) Circular motion
(b) Movement of tip of the minute hand of a clock in one hour
(ii) Rotational motion
(c) A moving swing
(iii) Periodic motion
16. Match the events related to motion in column I with the types of motions given in column II.
| Column I | Column II |
| (a) A moving wheel of a sewing machine | (i) Circular motion |
(b) Movement of tip of the minute hand of a clock in one hour | (ii) Rotational motion |
| (c) A moving swing | (iii) Periodic motion |
Explanation:
| Column I | Column II |
| (a) A moving wheel of a sewing machine | (ii) Rotational motion |
| (b) Movement of tip of the minute hand of a clock in one hour | (i) Circular motion |
| (c) A moving swing | (iii) Periodic motion |
17. While riding in a train, it appears like the nearby trees are moving but the other passengers are still. Describe the cause.
17. While riding in a train, it appears like the nearby trees are moving but the other passengers are still. Describe the cause.
Explanation:
The trees appear to be moving in the opposite way when we are in a moving train because of how they are shifting in relation to us. Co-passengers' positions, however, appear to be stationary because they aren't shifting in relation to us.
18. How do the movements of a moving electric fan's blade and a wheel on a moving bicycle differ? Explain.
18. How do the movements of a moving electric fan's blade and a wheel on a moving bicycle differ? Explain.
Explanation:
(i) A moving bicycle's wheels show both circular and rectilinear motion.
(ii) Bicycles are propelled forward by the rotation of their wheels on the ground.
(iii) Electric fan blades that are in motion only move in circles since they are not travelling from one location to another.
19. A corridor's length was measured by three students, who then reported their findings. Their measurements had varied results.
What might account for the discrepancy in their measurements? (Name any three) Remedy:
19. A corridor's length was measured by three students, who then reported their findings. Their measurements had varied results.
What might account for the discrepancy in their measurements? (Name any three) Remedy:
Explanation:
The disparity in their measurements may have a variety of causes, including
(i) In any of the three scenarios, the measurement might not be along the shortest length.
(ii) The measuring tools might not be uniform.
(iii) Several measurement tools were employed.
(iv) It can be difficult to get to the end of the corridor.
(v) Many measuring tools may have varying minimum lengths that they can detect.
20. Boojho was travelling on a straight route with a bicycle. He divided the motion of different bicycle components into three categories.
Provide reasons to back up your response.
(i) rectilinear motion
(ii) circular motion
(iii) combined rectilinear and circular motion. Can you name one bicycle component for each type of motion?
20. Boojho was travelling on a straight route with a bicycle. He divided the motion of different bicycle components into three categories.
Provide reasons to back up your response.
(i) rectilinear motion
(ii) circular motion
(iii) combined rectilinear and circular motion. Can you name one bicycle component for each type of motion?
Explanation:
(i) Rectilinear motion: The bicycle handle moves in a rectilinear fashion. As the bicycle's wheels advance, it travels straight forward.
(ii) Circular motion: The bicycle pedal revolves with its shaft in a round motion, remaining stationary.
(iii) Rectilinear and circular motion: The bicycle's wheel is travelling in both directions, rectilinearly and circularly. In addition to moving forward on the ground, wheels also rotate on their shafts.
