Chapter1,2,3 (Physics-X)

The study of the properties of matter consisting of atoms and electrons at a very high temperature is called:

• Atomic Physics

• Astro Physics

• Plasma Physics

• Solid State Physics

Laser is the field of :

• Atomic Physics

• Astro Physics

• Solid State Physics

• Plasma Physics

10^-9 second is called:

• milli Second

• micro Second

• nano Second

• pico Second

The fundamental unit of length in S.I system is:

• Kilometer

• centimeter

• meter

• none of these

The unit of frequency is:

• Watts

• Joule

• Hertz

• Farad

When a body has retardation, velocity of the body:

• Increases

• Decreases

• Remain Same

• Accelerate

Speed in a particular direction is called:

• Displacement

• Velocity

• Acceleration

• None of these

The magnitude of velocity is also called:

• Displacement

• Speed

• Velocity

• Acceleratin

If V = 10 m/s, t = 5 sec. S will be:

• 50 m

• 50 cm

• 25 cm

• 25 m

Rate of motion in specific direction is called:

• Displacement

• Distance

• Speed

• Velocity