Physics 4B MULTIPLE CHOICE QUESTIONS 1) A metal ball is just able to pass throug

Question

Physics 4B MULTIPLE CHOICE QUESTIONS 1) A metal ball is just able to pass through a metal ring. When the temperature of the ball is increased, however, it would not pass through the ring. What would happen if the temperature of the ring was increased instead than that of the ball? Will the size of the hole (a) increase (b) decrease (c) stay the same 2) These are 5 metal plates, all at the same temperature and all made from the same material. They are placed in an oven and heated by the same amount. Rank the plates in order ofA increasing expansion only in the vertical direction. 2u (a) C

Explanation / Answer

Question No (3) option (b) iscorrect. Explanation.

We have V1 =400L, P1=500kpa,V2=950L, P2=? And T1=T2=T( because temperature is constant)

From ideal gas equation P1V1/T1 =P2V2/T2

400*500/T=P2*950/T

P2=210.52lap

Question No( 4) option (a) is correct

Solution...We have ..work done =65kj ,heat=425kj U=?

From first law of thermodynamics we know

Q=U+W

425=U+650

U=425_650

U=_225kj

Hence option( a) is correct

Question No (1) option (a) correct

Becuz on heating the metal ring the diameter of the ring i

ncrease

QUESTION (5) option (c) is correct

Explanation As we know that work done in a diabetic compression is more than work done in isothermal compression so that graph is correct for which area is bigger which possible for graph 3rd

Question (2) option( c) is correct

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