Question

1. A pendulum takes 0.5 s to make one oscillation about its mean position. How long will it take to make 5 oscillations?

A)5 s

B)7.5 s

C)2.5s

D)10s

2. Sunitha can type 1800 words in half an hour. What is her typing speed in words per minute?

A)60

B)600

C)50

D)3000

3. A truck travels 840 km using 60 litres of diesel. What is the fuel consumption of the truck?

A)14 km per litre

B)14 litre per km

C)140 km per litre

D)140 litre per kr

4. A water pipe has water flowing through it. Which of the following changes would increase the speed of water flow through the pipe?

A)Increase the water pressure

B)Increase the length of pipe

C)Make the pipe coiled

D)Make the pipe narrower

5. With what speed should a car travel so that it can cover a distance of 5 km in 5 min?

A)1 km h−1

B)5 km h−1

C)12kmh−1

D)60 km h−1

6. A car travels with a speed of 50kmh−1in the 1st hour and 100kmh−1 in the 2nd hour. What is the total distance covered by the car in the two hours?

A)50km

B)100km

C)150 km

D)200 km

7. Which of the following is the most suitable device for measuring the time the runners take in a 100 m marathon?

A)Hourglass

B)Stopwatch

C)Pendulum

D)Sun dial

8. A man runs 10 km in 30 min. What is his speed per hour?

A)5kmh−1

B)10kmh−1

C)15kmh−1

D)20 km h−1

9. In a marathon, Varun runs 800 metres in 2 minutes 40 seconds. What is his speed in metres per second?

A)4ms−1

B)5ms−1

C)200ms−1

D)1600ms−1

10. Which of the following does NOT show oscillatory motion?

A)Swing

B)Fan

C)See-saw

D)Pendulum

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Answer 1

Answer:

1. 7.5

Step-by-step explanation:

0.5 x 5

no need to tell thanks

Answer 2

Answer:

1) 2.5s

2)60

3)14km per liter

4)increase the water pressure

5)60 kmh-1

6)150km

7)stopwatch

8)20kmh-1

9)5ms-1

10)fan