PHYSICS- (A) CHAPTER 1F4 ( 2)

Which of the following steps can be taken to reduce parallax error while taking a measurement from the voltmeter ?

• The pointer needs to be seen through an anti-parallax mirror.

• The pointer image is at the right of the pointer.

• Take several readings and find out the average.

• Use a more sensitive voltmeter.

Which of the following is not a SI base unit ?

• Meter

• Kilogram

• Ampere

• Hour

A student draws graph y against x. The relationship between y and x is y = r + px, r and p are constants. The gradient of graph y against x is

• p

• r

• y

• x

The mass of an object is two centigram. Which of the following explains the statement above ?

• The mass of the object is 2 x 10^-1 g

• The mass of the object is 2 x 10^-2g

• The mass of the object is 2 x 10^-3g

• The mass of the object is 2 x 10² g

Which of the following physical quantity is a derived quantity ?

• Mass

• Temperature

• Length

• Area

Which of the following is a vector quantity?

• Age of sun

• Acceleration of gravity

• Mass of a ball

• Distance between Ipoh and Melaka

Which of the following is a S.I. base unit ?

• Decimeter

• Meter

• Kilometer

• Megameter

Which of the following is a scalar quantity ?

• Distance

• Displacement

• Weight

• Momentum

A, B, C and D show the shooting marks on a target. Which marks can explain the concept of consistency of a measurement ?

• 
• 
• 
• 

The diagram shows the scale of a micrometer screw gauge.

What is the reading of the micrometer ?

• 6.58 mm

• 6.52 mm

• 6.03 mm

• 6.02 mm