1ST ONLINE ASSESSMENT AUGUST 2020 Subject: Physics Class: IX

One meter is equal to ____________.

• 10⁴ mm

• 10³ mm

• 10² mm

• None of them

Ibn-al-Haitham contributed toward _____________ Physics.

• Nuclear

• Oceanographic

• Optical

• Thermal

10^-9 second is called a ______________.

• decisecond

• milisecond

• microsecond

• nanosecond

The rate of change of velocity is called _______________.

• Speed

• Acceleration

• Motion

• None of them

The fundamental unit of length in SI system is ________________.

• kilometer

• meter

• yard

• foot

The standard meter is made of ________________ and is placed at the International Bureau of Weights and Measures in Sevece, near Paris.

• Platinum and copper

• Iron and copper

• Iron and iridium

• Platinum and iridium

) ________________ is the branch of physics that deals with the kinematics and dynamics of objects.

• Kinematics

• Dynamatics

• Mechanic

• a. None of them

The name of muslim scientist who born in Basra and made several discoveries on music was ___________________.

• Al-Beruni

• Al-Kindi

• Al-Khwarzmi

• a. nasir-ud-Din Tusi

Any quantity which can be measured by any method is called a _____________ quantity.

• Scalar

• Vector

• Physical

• a. None of them

Dr. Abdus Salam was awarded Nobel Price for his work on _________________.

• Electronics

• Transistors

• Grand unification Theory

• None of them