Class 11 Physics 2021 2nd Annual MCQs Test

ByMuhammad Zaman July 4, 2022October 28, 2022

FBISE Federal Board Class 11 Physics 2021 2nd Annual MCQs Test. Do as much practice as you can so that you get good marks in the final exams.

Class 11 Physics MCQs Tests

Physics 2021 2nd Annual MCQs Test

/17

Class 11 Physics
Paper 2021 2nd Annual
Practice MCQs Test

1 / 17

The value of escape velocity from the earth’s surface is:

[katex]11.2×10^{-3} kms^{-1} [/katex]

[katex]11.2×10^3 ms^{-1} [/katex]

[katex]11.2×10^{-3} ms^{-1} [/katex]

[katex] 11.2×10^3 kms^{-1} [/katex]

2 / 17

Torque and Moment of inertia are related according to the equation:

τ= I/α

τ=rα

τ= r/α

τ=Iα

3 / 17

The density of mercury at S.T.P is:

1.36gcm^-3

0.136gcm^-3

13.6gcm^-3

136gcm^-3

4 / 17

Two monochromatic radiations X and Y are incident normally on a diffraction grating. The second-order intensity maximum for X coincides with the third-order intensity maximum for Y. What is the ratio \( \frac {wavelength of X}{wavelength of Y} \)?

\( \frac{2}{3} \)

\( \frac{3}{2} \)

\( \frac{1}{2} \)

\( \frac{2}{1} \)

5 / 17

Which one of the following is NOT a conservative force?

Gravitational force

Resistive force

Magnetic force

Electric force

6 / 17

The principle of the Michelson interferometer is based on the division of:

Wave front

Frequency

Speed of light

Amplitude

7 / 17

In a closed organ pipe which one is the second harmonic f2?

[katex] \frac {3V}{2L} [/katex]

[katex] \frac {V}{4L} [/katex]

[katex] \frac {3V}{4L} [/katex]

[katex] \frac {V}{2L} [/katex]

8 / 17

A paratrooper falling down with constant velocity is in:

Rational equilibrium

Dynamic rational equilibrium

Static equilibrium

Dynamic translational equilibrium

9 / 17

The angular form of centripetal acceleration is:

[katex] \bar{a_c}= -\omega^2\bar{r} [/katex]

[katex] \bar{a_c}= \omega\bar{r} [/katex]

[katex] \bar{a_c}= V\bar{r} [/katex]

[katex] \bar{a_c}= \omega^2\bar{r} [/katex]

10 / 17

Which of the following electromagnetic waves are used in MRI?

X-rays

Radio waves

γ-rays

Microwaves

11 / 17

In which of the following system is the entropy decreasing?

A gas is cooled

A plate is shattered

A drop of dye diffuses in a cup of water

An egg is scrambled

12 / 17

Range of a projectile on a horizontal plane is same for the following pair of angles:

52° and 62°

43° and 47°

15° and 18°

20° and 80°

13 / 17

The SI unit of molar specific heat is:

[katex]J mole^{-1} K [/katex]

[katex]J mole K [/katex]

[katex]J mole K^{-1} [/katex]

[katex] J mole^{-1} K^{-1} [/katex]

14 / 17

The angel ‘θ’ which \( \bar{A}=2.3\hat{i}+4.1\hat{j}\) makes with the positive x-axis is:

60.7°

45°

119.3°

90°

15 / 17

Find the dimensions of gravitational constant G from the formula F = G \( \frac{m_1m_2}{r^2} \), where F is force, m1 and m2 are masses and d is the distance between centers of objects.

\( [M^{-1}L^{3}T^{2}] \)

\( [ML^{-3}T^{-2}] \)

\( [M^{-1}L^{3}T^{-2}] \)

\( [ML^{-3}T^{2}] \)

16 / 17

The net force that acts on a 10N falling object, when it encounters 4N of air resistance is:

10N

17 / 17

A cyclic process is represented by the equation:

∆U=∆W

∆Q=∆U+∆W

∆Q=0

∆Q=∆U

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One Comment

Aima Saghir says:
April 21, 2024 at 3:06 am
It is so helpful for us… Thank you a lot to fbise for this website
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Physics 2021 2nd Annual MCQs Test

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