PHYSICS QUIZ HHW CH-1,2

What is the ratio of the average acceleration during the intervals OA and AB in the velocity-time graph as shown below?

• 1/2

• 1/3

• 1

• 3

An athlete finishes a round of circular track of radius R in 40 sec. What is his displacement at the end of 2 min 20 sec?

• 0

• 1. 2πR

• 1. πR

• 2R

Which of the following remains constant if a body travels with constant acceleration?

• TIME

• VELOCITY

• DISPLACEMENT

• NONE OF THESE

A train covers the first half of the distance between two stations at a speed of 40km/h and the other half at 60 km/h. Then its average speed is

• 50KM/HR

• 48KM/HR

• 52KM/HR

• 100KM/HR

The symbol to represent “Amount of Substance” is

The smallest value which is measured using an instrument is known as

Dimensions of kinetic energy is the same as that of

The slope of v-t groph gives?

• Acceleration

• Distance

• Displacement

• Mean

THE NO. OF SIGNIFICANT FIGURES IN 0.006969 ARE?

• 6

• 4

• 6.0

• 4.0

DIMENSIONS OF ELECTRIC FIELD ARE?