A system performs work when an amount of heat is added to the system, the corresponding change in the internal energy is . A unique function of the initial and final states (irrespective of the mode of change) is

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1.
A system performs work when an amount of heat is added to the system, the corresponding change in the internal energy is . A unique function of the initial and final states (irrespective of the mode of change) is

1. 2. 3.  and 4.

2.
When an aeroplane attains a speed higher than the velocity of sound in air, a loud bang is heard. This is because

1. It explodes2. It produces a shock wave which is received as the bang3. Its wings vibrate so violently that the bang is heard4. The normal engine noises undergo a Doppler shift to generate the bang

3.
When an object is projected at angle, then maximum height attained is H₁ and when this is projected at angle with same speed, then maximum height attained is H₂, then
(Here R₁& R₂ are ranges in these conditions)

1. R1 = R2 and H1 = H22. R1 ≠ R2 and H1 = H23. R1 = R2 and H1 ≠ H24. R1 ≠ R2 and H1 ≠ H2

4.
When an object is projected at angle then maximum height attained is H₁ and when this is projected at angle with same speed, then maximum height attained is H₂(Here R₁& R₂ are ranges in these conditions)
Choose the correct option

1. R1 = R2 = R = 2. H1 = H2 = H = 3. R1 ≠ R24. H1 = H2

5.
When an object is projected at angle, then maximum height attained is H₁ and when this is projected at angle with same speed, then maximum height attained is H₂(Here R₁& R₂ are ranges in these conditions)
If time of flight in both cases are T₁ and T₂ respectively, then

1. T1 = T22. T1 > T23. 4. Both (2) & (3)

A system performs work  when an amount of heat is added to the system, the corresponding change in the internal energy is . A unique function of the initial and final states (irrespective of the mode of change) is