Question

1. The speed of the car is 30km/hr, so in 30 minutes the distance covered by this car is

a. 10 km b. 5 km

C. 12 km d. 15 km


2.Our ancestors considered one month as the time between

a. One new moon to the no moon

b. One new moon to the next new moon

c. Half moon tonight the full moon

d. Crescent moon to the full moon


3. When an object moves along a straight line with a constant speed, it is said to be in

a. Non – uniform motion

b. Harmonic motion

c. Circular motion

d. Uniform motion


4. The time period of simple pendulum depends on the

a. Mass of the bob

b. Shape of the bob

c. Thickness of the thread

d. Length of the thread


5. The to and from motion is an example of

a. Oscillatory motion

b. Periodic motion

c. Circulatory motion

d. Both oscillatory and periodic motion


6. The number of oscillations made by a pendulum in one second in called its
a. Time period

b. Speed

c. Length

d. Frequency


7. In earlier days, people use to measure time on the basis of

a. Occurrence of periodic events in nature

b. Movement of a compass needle

c. Reading in an odometer

d. Reading in speedometer


8. Which one of the following records the distance travelled by the vehicles?

a. Manometer

b. Odometer

c. Speedometer

d. Oxymeter


9.Which of the following instruments measures time most accurately

a. Sundial

b. Quartz clock

c. Pendulum clock

d. Watch with balance wheel


10. A body is said to be in non – uniform motion

a. If the speed or direction of the body remains constant

b. If the speed or direction of the body does not remains constant

c. If it covers equal distances in equal interval of time

d. None of these​

Answer 1

Explanation:

1.d

2.b. One new moon to the next new moon

3. d. Uniform motion

4.d. Length of the thread

5.d. Both oscillatory and periodic motion

6.d. Frequency

7.a. Occurrence of periodic events in nature

8.b. Odometer

9.b. Quartz clock

10.

b. If the speed or direction of the body does not remains constant