Quiz  /  Physics Class 10 MCQ Questions With Answers

  • 1. 
    Two plastic cups are placed one inside the other. A small spacer keeps the two cups separated. Hot water is poured into the inner cup and a lid is put on top, as shown. Which statement is correct?

  • The bench is heated by convection from the bottom of the outer cup.
  • The lid reduces the energy lost by convection.
  • There is no thermal conduction through the sides of either cup.
  • Thermal radiation is prevented by the small air gap.

  • 2. 
    Which statement describes what happens as ice at 0°C starts to melt to become water?

  • Energy is absorbed and the temperature remains constant.
  • Energy is absorbed and the temperature rises.
  • Energy is released and the temperature remains constant.
  • Energy is released and the temperature rises.

  • 3. 
    Evaporation occurs when molecules escape from a liquid surface into the air above it. During this process the temperature of the liquid falls. Why does the temperature of the liquid fall?

  • The molecules in the vapour expand because the pressure is less.
  • The molecules left in the liquid have more space to move around.
  • The molecules move more slowly when they escape into the air.
  • The molecules with the highest energies escape into the air.

  • 4. 
    An experiment is set up to find out which metal is the best conductor of heat. Balls are stuck with wax to rods made from different metals, as shown in diagram 1. The rods are heated at one end. Some of the balls fall off, leaving some as shown in diagram 2. Which labelled metal is the best conductor of heat?

  • A
  • B
  • C
  • D

  • 5. 
    All atoms are vibrating, hot atoms have more energy. When hot atoms bump into cold atoms they transfer energy.

  • True
  • False

  • 6. 
    Which of the following is a fundamental particle of the universe?

  • The proton
  • The neutron
  • The electron
  • They all are fundamental particles

  • 7. 
    What is the net force?

  • 17 N Right
  • 3 N Right
  • 3 N Left
  • 17 N Left

  • 8. 
    All atoms consist of mostly empty space.

  • True
  • False

  • 9. 
    True or false: Heat moves from the cooler object to a warmer object

  • True
  • False

  • 10. 
    Units of acceleration (a)

  • m/s
  • kg
  • m/s2
  • N

  • 11. 
    In the standard model, the particle considered to be an elementary particle is a(n)

  • proton
  • neutron
  • electron
  • alpha particle

  • 12. 
    The diagram shows two narrow beakers A and B, and two wide beakers C and D. All four beakers contain the same mass of water.Beaker A and beaker C contain low energy water molecules.Beaker B and beaker D contain high energy water molecules. From which beaker does the water evaporate most slowly?

  • A
  • B
  • C
  • D

  • 13. 
    Units of velocity (v)

  • m/s2
  • m/s
  • N
  • kg m/s

  • 14. 
    You and your dad are moving the couch from one side to another. Your dad pushes with a force of 35 N to the right and you push with a force of 25 N right. What is the net force on the couch?

  • 60 N right
  • 10 N left
  • 60 N right
  • 50 N left

  • 15. 
    To convert from Celsius to Kelvin: K = Degrees Celsius + __________

  • 251 K
  • 275 K
  • 213 K
  • 273 K

  • 16. 
    Recall the equation to calculate the change in heat (Thermal Energy) of an equation: ∆Q = mc∆TIf ∆Q = 100 Jm = 10 g ∆T = 2 °CWhat is c (in J/kgK) ?

  • 20
  • 5
  • 25
  • 200

  • 17. 
    Which has the higher specific heat capacity, water or sand?

  • water
  • sand
  • they are both equal

  • 18. 
    Almost all of the mass of an atom is found in what part?

  • The electron cloud
  • The nucleus
  • The protons
  • The charge

  • 19. 
    Units of momentum (p)

  • kg m/s
  • kg
  • m/s
  • Ns

  • 20. 
    True/False: when two substances reach the same temperature they are in thermal equilibrium.

  • True
  • False

  • 21. 
    What letter represents heat?

  • S
  • C
  • T
  • Q

  • 22. 
    Units of energy (KE, PE, EE)

  • kg
  • J
  • kg m/s
  • m/s2

  • 23. 
    Heat energy can be lost from a hot object by radiation.What is the name of this radiation, and is it electromagnetic?

  • A
  • B
  • C
  • D

  • 24. 
    Temperature is a measure of the...

  • total energy in a substance
  • total kinetic energy in a substance
  • average potential energy in a substance
  • average kinetic energy of molecules in a substance

  • 25. 
    The following number in scientific notation is 0.0005621 = _____

  • 5.621 x 104
  • 5.621 x 10-5
  • 5.621 x 10-4
  • 56.21 x 102

  • 26. 
    Units of mass (m)

  • s
  • N
  • kg
  • kg m/s

  • 27. 
    Mass and energy are interrelated and this is shown with Einstein's equation, E=mc2.

  • True
  • False

  • 28. 
    All of the following are quarks except

  • strange
  • bottom
  • charmed
  • fundamental

  • 29. 
    If two objects have different temperatures, heat will flow from the warmer object to the cooler one UNTIL ____________

  • one reaches a temperature of zero
  • they both have an equal temperature
  • one runs out of energy

  • 30. 
    When you see something that is stationary or not moving what should you think?

  • Unbalanced
  • Balanced
  • Kinetic
  • Work
Report Question
warning
access_time
  Time