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

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.

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

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

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

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

2 / 17

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

136gcm^-3

13.6gcm^-3

1.36gcm^-3

0.136gcm^-3

3 / 17

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

Amplitude

Wave front

Speed of light

Frequency

4 / 17

A paratrooper falling down with constant velocity is in:

Dynamic translational equilibrium

Static equilibrium

Dynamic rational equilibrium

Rational equilibrium

5 / 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 \( \frac {wavelength of X}{wavelength of Y} \)?

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

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

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

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

6 / 17

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

τ=Iα

τ= r/α

τ=rα

τ= I/α

7 / 17

Which of the following electromagnetic waves are used in MRI?

γ-rays

Radio waves

Microwaves

X-rays

8 / 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°

90°

119.3°

9 / 17

In which of the following system is the entropy decreasing?

An egg is scrambled

A plate is shattered

A drop of dye diffuses in a cup of water

A gas is cooled

10 / 17

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

[katex]11.2×10^{-3} ms^{-1} [/katex]

[katex]11.2×10^3 ms^{-1} [/katex]

[katex]11.2×10^{-3} kms^{-1} [/katex]

[katex] 11.2×10^3 kms^{-1} [/katex]

11 / 17

The angular form of centripetal acceleration is:

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

[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]

12 / 17

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

52° and 62°

20° and 80°

43° and 47°

15° and 18°

13 / 17

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

10N

14 / 17

The SI unit of molar specific heat is:

[katex]J mole K [/katex]

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

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

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

15 / 17

A cyclic process is represented by the equation:

∆Q=0

∆Q=∆U

∆Q=∆U+∆W

∆U=∆W

16 / 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]

17 / 17

Which one of the following is NOT a conservative force?

Resistive force

Gravitational force

Electric force

Magnetic force

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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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