HSC 2026 Physics 1st Paper MCQ Solution (English Version)
1. Which force is responsible for obtaining the terminal velocity?
✓ Answer: (c) Viscous Force
2. What is the Young's modulus of a perfectly flexible material?
✓ Answer: (b) 0
3. How much displacement of a simple oscillatory body from equilibrium will its static energy be equal to its kinetic energy?
✓ Answer: (d) A / √2
4. Which one of the following is triad?
✓ Answer: (a) 48 : 60 : 72
5. If the air humidity is high—
i. evaporation is slow
ii. the temperature difference of the hygrometer is high
iii. the dew-point is high
Which of the following is correct?
i. evaporation is slow
ii. the temperature difference of the hygrometer is high
iii. the dew-point is high
Which of the following is correct?
✓ Answer: (b) i, iii
6. Which of the following is the critical temperature of water?
✓ Answer: (d) 647 K
Answer questions no. 7 and 8 in the light of the stimulus:
Two tuning forks A and B when sounded together 8 beats are produced. If a bit wax is added to the prongs of B, number of beats becomes 6. Frequency of A is 100 Hz.
Two tuning forks A and B when sounded together 8 beats are produced. If a bit wax is added to the prongs of B, number of beats becomes 6. Frequency of A is 100 Hz.
7. What was the frequency of B before applying the wax?
✓ Answer: (d) 108 Hz
8. What was the ratio of the frequencies of A and B after wax was applied to B's arm?
✓ Answer: (c) 50 : 53
9. Which of the following graphs is correct according to the equation?
y = a sin(ωt - π/2)
y = a sin(ωt - π/2)
✓ Answer: (d) Cosine curve from negative y-axis
10. Which of the following is NOT a unit of distance measurement?
✓ Answer: (d) Ohm-meter
11. A cylinder is measured to have a length of (10.0 ± 0.05) cm and a radius of (5.0 ± 0.1) mm. Based on this what percentage error will there be in measuring the volume of the cylinder.
✓ Answer: (b) 4.5%
12. What is the ratio of the vertical component to the horizontal component of P?
✓ Answer: (a) tanθ
13. If A and B are planer vectors, what is the angle between (A + B) and (A - B)?
✓ Answer: (c) 0° to 180°
14. If two particles pass a point at a speed of 12 ms-1 and 20 ms-1 respectively, making an angle 120°. What will be the distance between them after 4 sec?
✓ Answer: (b) 112 m
15. At the maximum height of projectile is—
i. Velocity is horizontal
ii. The acceleration is not zero
iii. Kinetic energy is zero
Which of the following is correct?
i. Velocity is horizontal
ii. The acceleration is not zero
iii. Kinetic energy is zero
Which of the following is correct?
✓ Answer: (a) i and ii
16. What is the equation of the trajectory of an object thrown horizontally.
✓ Answer: (a) x2 = (2v02 / g)y
17. Which of the following is a moment of momentum?
✓ Answer: (d) Angular Momentum
18. What is the angle between the angular momentum and linear velocity of an object rotating in a circular path?
✓ Answer: (c) 90°
Answer questions no. 19 and 20 in the light of the stimulus:
The municipal intersection and the station intersection have a banking angle of 3° on the 16m and 25m radius road respectively. The width of the both roads is 4m.
The municipal intersection and the station intersection have a banking angle of 3° on the 16m and 25m radius road respectively. The width of the both roads is 4m.
19. How much higher will the inside side of the road be than the outside side at a municipal intersection?
✓ Answer: (b) 0.209 m
20. What will be the ratio of the maximum speeds of the cars crossing both the intersections?
✓ Answer: (a) 4 : 5
21. Which of the following will be the mass-momentum graph for an object with constant kinetic energy?
✓ Answer: (b) Parabolic curve opening to the right
22. The product of the efficiency of a machine and the power supplied by the machine indicates which of the following?
✓ Answer: (c) Work done
23. If an object is allowed to fall freely from a height of 33m, at what height will the kinetic energy of the object be half of its potential energy?
✓ Answer: (c) 22 m
24. Gravitational potential is—
i. A scalar quantity
ii. Its value is the highest outside the field
iii. Its dimention equation M-1L2T-2
Which of the following is correct?
i. A scalar quantity
ii. Its value is the highest outside the field
iii. Its dimention equation M-1L2T-2
Which of the following is correct?
✓ Answer: (b) i and iii
25. Which formula is used to determine the orbital period of an artificial satellite?
✓ Answer: (b) T = 2π × [(R+h)3/2 / (gR2)1/2]
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