Unit -1 scientific Study -Set -1

How many types of variables are there?

• 2

• 3

• 4

• 5

The variable whose value can be determined by the user ..........is called variable.

• Dependent

• Independent

• Controlled

• Constant

The value depends on other variables and the user cannot determine its value directly is called ........ variable.

• Dependent

• Controlled

• Independent

• Constant

The variable that is controlled during an experiment is called variable.

• Independent

• Controlled

• Dependent

• Controlled and dependent

The unit of mass is called a fundamental unit, because

• It depends on other units of measurement.

• It does not depend on other units of measurement.

• It is easy to measure.

• It depends only on two units of measurement

Identify the group of fundamental units from the following.

• kg. Pa, m, s

• kg. m, K, A

• kg. N. Pa, W

• m. s, N. W

Which of the following is the group of derived units?

• m, s. Pa, N

• Pa, N. m/s, m/s2

• k. m, kg, s

• kg, K. Pa, N

Identify the fundamental units involved in the unit watt (W).

• kg, m and s

• kg, m and cm

• kg, m and K

• kg. m and N

Which of the following are the fundamental units involved in the unit of pressure?

• kg/ms2

• kg m²/s²

• g/ms2

• kg/m³

Identify the physical quantity related to the given units. (i) kg m2/s3 (ii) kg m/s2

• (i) Power (ii) Pressure

• (i) Pressure (ii) Power

• (i) Force (ii) Pressure

• (i) Pressure (ii) Force