YNet StudyHub

1What is the SI unit of force?

A Newton B Joule C Pascal D Watt

2A ruler has markings every 1 cm. What is the smallest length that can be measured directly with this ruler?

A 0.1 cm B 0.5 cm C 1 cm D 2 cm

3Which of the following best describes pressure?

A Force per unit area B Mass per unit volume C Energy per unit time D Force times distance

4If the pressure exerted by a 50 N force on a surface is 10 N/m², what is the area of the surface?

A 5 m² B 0.2 m² C 500 m² D 0.05 m²

5Which state of matter has a definite shape and volume?

A Solid B Liquid C Gas D Plasma

6When a metal rod is heated, it lengthens. This is an example of:

A Conduction B Thermal expansion C Convection D Radiation

7Which method of heat transfer requires a material medium?

A Conduction B Radiation C Convection D All of the above

8A ray of light strikes a plane mirror at an angle of 30° to the normal. What is the angle of reflection?

A 30° B 60° C 90° D 0°

9Which of the following is NOT a property of a good conductor of electricity?

A Low resistance B High melting point C Free electrons D High conductivity

10In a simple circuit, the current is 2 A and the resistance is 5 Ω. What is the voltage supplied?

A 10 V B 2.5 V C 7 V D 0.4 V

11Which instrument is used to measure mass?

A Balance B Meter rule C Barometer D Thermometer

12If the temperature of a gas is increased while volume is kept constant, the pressure will:

A Decrease B Increase C Remain unchanged D Become zero

13Which particle is present in the nucleus of an atom?

A Electron B Neutron C Photon D Positron

14A metal spoon becomes hot after being left in a pot of boiling water. The main mode of heat transfer is:

A Conduction B Convection C Radiation D Evaporation

15What is the correct symbol for pressure?

A P B V C T D m

16Which of the following best describes the term 'scalar quantity'?

A Has magnitude only B Has magnitude and direction C Changes with time D Is always zero

17A circuit contains a 9 V battery and two identical resistors in series. The voltage across each resistor is:

A 9 V B 4.5 V C 3 V D 6 V

18When light passes from air into water, it:

A Speeds up B Slows down C Stops D Changes colour

19If a force of 20 N is applied to a body for 3 seconds, the impulse delivered is:

A 60 Ns B 6 Ns C 23 Ns D 0.15 Ns

20Which of the following devices can be used to measure pressure of a gas?

A Barometer B Thermometer C Hydrometer D Ammeter