Chapter 1 - Physical Quantities, Units and Measurement

A simple pendulum with an angle of swing of 10° takes 1.00 s to complete one oscillation.

 

If the angle of swing of the same pendulum is reduced to 5°, each complete oscillation will take

• 0.50 s

• 0.95 s

• 1.00 s

• 2.00 s

Which quantity is not a base quantity?

• amount of substance

• electric current

• time

• speed

Which reading is given to one tenth of a millimetre?

• 3.3 cm

• 3.31 cm

• 3.310 cm

• 3.312 cm

Which of these list of prefixes shows them in ascending order?

• centi, deci, giga, kilo, mega, mili

• mili, mega, kilo, giga, deci, centi

• mili, centi, deci, kilo, mega, giga

• giga, mega, kilo, deci,centi, mili

Which of these is a vector quantity?

• distance

• energy

• time

• weight

A man walk towards East for 3 km and then walk towards North for 4 km. What is the distance travelled and the displacement of the man?

• 5 km and 5 km

• 5 km and 7 km

• 7 m and 5 km

• 7 km and 7 km

Which of these can be measured with micrometer screw gauge?

• circumference of a ping pong ball

• depth of a cup

• height of a child

• thickness of a coin

A small cylinder rolled two full turns as shown in the diagram. What is the circumference of the cylinder?

• 4.4 cm

• 5.1 cm

• 8.8 cm

• 10.2 cm

A vector includes ______ and ________.

• direction, magnitude

• magnitude, units

• direction, units

• scalars, scalars

TRUE or FALSE:

Vectors A, B, and C are added together as A + B + C. If the order in which they are added is changed to C + B + A, then the result would be different.

• TRUE

• FALSE