Thoroughly analyzing AP Inter 1st Year Physics Model Papers Set 2 helps students identify their strengths and weaknesses.

## AP Inter 1st Year Physics Model Paper Set 2 with Solutions

Time: 3 Hours

Maximum Marks: 60

Section – A (10 × 2 = 20 Marks )

Note :

- Answer all questions.
- Each question carries two marks.
- All are very short answer type questions.

Question 1.

What is the discovery made by C.V. Raman ?

Question 2.

How can systematic errors be minimized or eliminated ?

Question 3.

A = \(\overline{\mathrm{i}}\) + \(\overline{\mathrm{j}}\) . What is the angle between a vector and the X-axis ?

Question 4.

What is inertia ? What gives the measure of inertia ?

Question 5.

If the diameter of a soap bubble is 10 mm and its surface tension is 0.04 N/m, find the excess pressure inside the bubble ?

Question 6.

Why are drops and bubbles spherical ?

Question 7.

What are the units and dimensions of a specific gas constant ?

Question 8.

Ventilators are provided in rooms just below the roof. Why ?

Question 9.

When does a real gas behave like an ideal gas ?

Question 10.

State Dalton’s law of partial pressures.

Section – B (6 × 4 = 24 Marks)

Note :

- Answer any six questions.
- Each question carries four marks.
- All are short answer type questions.

Question 11.

State the parallelogram law of vectors. Derive an expression for the magnitude and direction of the resultant vector.

Question 12.

Show that the maximum height reached by a projectile launched at an angle of 45° is one quarter of the range.

Question 13.

Mention the methods used to decrease friction.

Question 14.

Find the torque of a force 7\(\overline{\mathrm{i}}\) + 3\(\overline{\mathrm{j}}\) – 5\(\overline{\mathrm{k}}\)about the origin. The force acts on a particle whose position vector is \(\overline{\mathrm{i}}\) – \(\overline{\mathrm{j}}\) + \(\overline{\mathrm{k}}\) .

Question 15.

Distinguish between the centre of mass and the centre of gravity.

Question16.

What is orbital velocity ? Obtain an expression for it.

Question 17.

Define strain energy and derive the equation for the same.

Question 18.

In what way is the anomalous behaviour of water advantageous to an aquatic animal ?

Section – C (2 × 8 = 16 Marks)

Note :

- Answer any two questions.
- Each question carries eight marks.
- All are long answer type questions.

Question 19.

Develop the notions of work and kinetic energy and show that they lead to the work – energy theorem.

A machine – gun fires 360 bullets per minute and each bullet travels with a velocity of 600 m/sec. If the mass of each bullet is 5 gm, find the power of the machine – gun.

Question 20.

Show that the motion of a simple pendulum is simple harmonic and hence derive an equation for its time period. What is a seconds pendulum ?

Question 21.

Explain reversible and irreversible processes. Describe the working of a Carnot engine. Obtain an expression for the efficiency.