Physics Questions and Answers
If you want to learn more about the nature and properties of matter and energy or you're simply preparing for a Physics exam, these Physics past questions and answers are ideal for you.
If you want to learn more about the nature and properties of matter and energy or you're simply preparing for a Physics exam, these Physics past questions and answers are ideal for you.
400 J kg-1K-1
500 J kg-1K-1
390 J kg-1K-1
130 J kg-1K-1
Correct answer is B
Heat supplied by the heater in 10 mins
= power x time
= 50 x (10 x 60)
= 30000 J
This heat is equal = MCΔt
= 5 x c x 12
= 60cJ
= 60C = 30,000
C = 30,000/60
C = 500 J kg-1K-1
I, II and V
I and IV
I, III and IV
III, IV and V
Correct answer is C
No explanation has been provided for this answer.
Tea pots are often silver-coated to prevent heat loss by
conduction only
convention only
convection and conduction
radiation only
Correct answer is D
No explanation has been provided for this answer.
0.50m3
0.45m3
0.05m3
4.50m3
Correct answer is C
Vol. of ice = M/?D = 450/900 = 0.500m3
vol. of water = M/D" = 450/1000 = 0.450m3
∴ Difference in vol. = 0.500 - 0.450
= 0.05m3
The phase difference between waves P and q in the diagram above is
2π
π
π/4
π/2
Correct answer is D
No explanation has been provided for this answer.