Quarter 1

1

Which factor does not affect wave speed?

A Medium B Elasticity C Density D Amplitude

2

The SI unit of specific heat capacity is:

A J/kg B J/°C C J/kg°C D W/m°C

3

The SI unit of frequency is:

A Meter B Second C Hertz D Joule

4

Which wave can travel through vacuum?

A Sound wave B Water wave C Electromagnetic wave D Seismic wave

5

Wave velocity is given by:

A v = f / λ B v = f × λ C v = λ / f D v = f + λ

6

When gas particles strike the walls of container, they exert:

A Heat B Force C Energy D Mass

7

Refraction of waves occurs due to change in:

A Frequency B Amplitude C Medium D Source

8

Energy carried by a wave is proportional to:

A Frequency B Wavelength C Amplitude squared D Wave speed

9

Convection occurs mostly in:

A Solids B Liquids and gases C Vacuum D Metals only

10

Evaporation is faster on a:

A Cold day B Humid day C Windy day D Cloudy day

11

Coefficient of linear expansion depends on:

A Shape of object B Size of object C Material of object D Mass of object

12

Which energy source is eco-friendly?

A Coal B Oil C Geothermal D Gasoline

13

During melting of ice, temperature:

A Increases B Decreases C Remains constant D Becomes zero

14

Which surface is a good emitter of heat?

A Shiny surface B Polished surface C Black surface D White surface

15

Which property of waves depends on energy?

A Frequency B Amplitude C Wavelength D Time period

16

Anomalous expansion of water occurs between:

A 0°C to 4°C B 4°C to 10°C C 0°C to 10°C D 10°C to 20°C

17

At constant volume, pressure of a gas is directly proportional to:

A Mass B Density C Temperature D Area

18

Which of the following is a transverse wave?

A Sound in air B Water surface wave C Compression wave D Seismic P-wave

19

Which quantity depends on mass and specific heat capacity?

A Temperature B Heat C Density D Pressure

20

Solar cooker works mainly on:

A Conduction B Convection C Radiation D Evaporation

21

According to the kinetic theory of matter, particles of matter are always in:

A Rest B Circular motion C Random motion D Linear motion only

22

Standing waves are formed due to:

A Reflection of waves B Refraction of waves C Diffraction of waves D Absorption of waves

23

Mechanical waves require:

A Vacuum B Medium C Electric field D Magnetic field

24

Which quantity remains constant during thermal expansion?

A Volume B Mass C Length D Density

25

Thermal expansion in liquids is measured by:

A Linear expansion B Area expansion C Volume expansion D Mass expansion