Past Papers

Question 1

The meaning of which SI unit is given correctly?

A) Nano: 10-6

B) Peta: 10 15

C) (u) micro: 10 6

D) deci: 10

Answer 1

B.

Question 2

Which of the following statements is true in the case of small angles?

A. Sin(alpha) = cos (alpha)

B. Sin (alpha) = tan (alpha)

C. Non of the other three answer options is correct

D. Cos (alpha) = tan (alpha)

Answer 2

B.

Question 3

9. What is the meaning of the concept ‘frame of reference?’

Answer 3

B. The co-ordinate system to which the motion of other bodies is correlated.

Question 4

10. An elevator accelerates, moves with constant speed, deaccelerates, and then stops as it moves from the 2nd floor to the 3rd floor. When is the elevator cabin in mechanical equlilibrium?

Answer 4

C. Only when it moves with constant speed and when it does not move.

Question 5

11. According to the law of universal gravitation…

Answer 5

The attractive force acting on a body is proportional to its mass.

Question 6

27. What is a homogenous electric field?

Answer 6

All force vectors are parallel, have the same direction and magnitude

Question 7

29. The voltage between the plates of a capacitor is increased by 100%.

How does its capaticance change?

Answer 7

It decreases by 50 %.

Question 8

33. There is an electric potential difference between two points. Which statement is true?

Answer 8

A. The two points are for sure not part of the same equipotential surface.

Question 9

34. What is a resonant circuit?

Answer 9

D. An electric circuit consisting of a coil and a capacitor.

Question 10

6. In case of velocity-time graph, the area under the curve corresponds to…

Answer 10

Displacement.

Question 11

10. A car is going straight along a road with a constant speed of 45 k/h. Choose the correct statement:

Answer 11

A) The car is in equilibrium

Question 12

11. According to the law of universal gravitation:

Answer 12

.. objects with a greater mass are attracted by stronger forces to each other.

Question 13

Which is NOT a kind of mechanical energy?

A) kintetic

B) elastic potential energy stored in a spring

C) Internal energy

D) Gravitational potential energy

Answer 13

C) Internal energy

Question 14

A process is isobaric, if…

Answer 14

The pressure remains the same throughout the process.

Question 15

In case of damped oscillation..

Answer 15

The amplitude of the oscillation decreases over time but its frequency does not.

Question 16

In an electric field..

Answer 16

The density of electric field lines is proportional to the velocity change of the charged particle placed in the force field.

Question 17

The voltage bewtween two points of the same equipotential surface …

Answer 17

Is always zero.

Question 18

We know the angular velocity of a rotating object, but nothing else. Which of the following quantities can be calculated in such a case?

Answer 18

Frequencyu and time period

Question 19

Which of the following is NOT true?

A) The speed of sound depends on frequency

B) sound is a mechanical wave

C) the audible sound has a frequency of between 20 Hz and 20 kHz.

D) the speed of sound depends on the conpressibility of the medium.

Answer 19

A)

Question 20

One mole of an ideal gas expands in an isobaric process:

A) the temperature of the gas increases

B) the temperature of the gas decreases

C) the pressure of the gas decreases

D) The pressure of the gas increases.

Answer 20

A) the temperature of the gas increases.