Download CBSE Sample Paper 2024-25 for class 12th to 8th

Physics Test 9

Result

Physics Test 9

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Weekly Quiz Competition

Question 1
4 / -1

110 J of heat are added to a gaseous system by which internal energy increases by 40 J, the amount of work done is –

A
150 J

B
70 J

C
110 J

D
40 J

Solution

Δ_w = ΔQ – ΔU

= 110 – 40 = 70 J
Question 2
4 / -1

In an isobaric process, the change in temperature for 0.1 mole of N₂ is 300K. The work done by the gas is
(given C_P – C_V = 8.3 J/mole – K)

A
2490 J

B
249 J

C
24.90 J

D
2.490 J

Solution

W = PΔV = nRΔT

= 0.1 × 8.3 × 300 = 249 J