Maharashtra Board Class 12th Physics Important Objective Question for 2024

!– wp:paragraph –> महाराष्ट्र बोर्ड इंटरमिजिएट परीक्षा 2024 मध्ये विचारले जाणारे महत्त्वाचे भौतिकशास्त्राचे प्रश्न येथे आहेत, इयत्ता 12वीच्या भौतिकशास्त्राच्या परीक्षेसाठी 39 महत्त्वाचे प्रश्न. जर तुम्ही इंटरमिजिएट परीक्षेला बसत असाल आणि तुमचा विषय भौतिकशास्त्र असेल तर दिलेले सर्व प्रश्न काळजीपूर्वक वाचा.

Maharashtra Board Class 12th Physics Important Objective Question 2024

Results

#1. The angular momentum of a system of particles is conserved ______

When no external force acts upon the system

When no external torque acts upon the system

When no external impulse acts upon the system

When the axis of rotation remains the same

#2. A hydraulic lift is designed to lift heavy objects of maximum mass 2000 kg. The area of cross-section of piston carrying the load is 2.25 × 10-2 m2. What is the maximum pressure the smaller piston would have to bear?

0.8711 × 106 N/m2

0.5862 × 107 N/m2

0.4869 × 105 N/m2

0.3271 × 104 N/m2

#3. In an ideal gas, the molecules possess

Only kinetic energy

Both kinetic energy and potential energy

Only potential energy

Neither kinetic energy nor potential energy

#4. The second law of thermodynamics deals with the transfer of ______.

Work done

Energy

Momentum

Heat

#5. Acceleration of a particle executing S.H.M. at its mean position.

Is infinity

Varies

Is maximum

Is zero

#6. The maximum speed of a particle executing S.H.M. is 10 m/s and maximum acceleration is 31.4 m/s2. Its periodic time is ______

1 s

2 s

4 s

6 s

#7. A man standing unsymmetrical position between two mountains and fires a gun. He hears the first echo after 1.5 s and the second echo after 2.5 s. If the speed of sound in air is 340 m/s, then the distance between the mountains will be ______

400 m

520 m

640 m

680 m

#8. Light follows wave nature because ______

Light rays travel in a straight line

Light exhibits the phenomenon of reflection and refraction

Light exhibits the phenomenon of interference

Light causes the phenomenon of the photoelectric effect

#9. When unknown resistance is determined by meter bridge, the error due to contact resistance is minimised by ______

connecting both the resistances only in one gap

interchanging the position of known and unknown resistances

using uniform wire

obtaining the null point near the ends of the wire

#10. The instrument which can measure terminal potential difference as well as electromotive force (emf) is ______

Wheatstone’s meter bridge

voltmeter

potentiometer

galvanometer

#11. Intensity of the magnetic field of the earth at the point inside a hollow iron box is ______.

Less than that outside

More than that outside

Same as that outside

Zero

#12. The role of inductance is equivalent to ______

inertia

force

energy

momentum

#13. A series LCR resonant circuit is used as ______

A radio wave transmitter

A potential divider circuit.

A tunning circuit in a television receiver set.

A source of displacement current

#14. A parallel LC resonant circuit is used as ______

a tunning circuit in a television receiver set.

a transformer

a rectifier

a filter circuit

#15. The maximum kinetic energy of the photoelectrons depends only on ______

potential

frequency

incident angle

pressure

#16. According to Bohr's second postulate, the angular momentum of the electron is the integral multiple of ℎ 2 𝜋 . The S.I unit of Plank constant h is the same as ______

Linear momentum

angular momentum

Energy

Centripetal force

#17. The Boolean expression for Exclusive OR gate (X-OR gate) is ______

A + B

A ⊕ B

A \⊕\ B

A.B

#18. For a transistor β =75 and IE = 7.5 mA. The value of α is ______

0.1

0.66

0.75

0.98

#19. Consider the following cases: (P) A planet revolving in an elliptical orbit. (Q) A planet revolving in a circular orbit. Principle of conservation of angular momentum comes in force in which of these?

Only for (P)

Only for (Q)

For both, (P) and (Q)

Neither for (P), nor for (Q)

#20. The energy stored in a soap bubble of diameter 6 cm and T = 0.04 N/m is nearly ______.

0.9 × 10–3J

0.4 × 10–3J

0.7 × 10–3J

0.5 × 10–3J

#21. The molar specific heat of a gas at constant volume is 12307.69 J kg-1 K-1. If the ratio of the two specific heats is 1.65, calculate the difference between the two molar specific heats of gas.

7999 J kg-1 K-1

7245 J kg-1 K-1

6890 J kg-1 K-1

4067 J kg-1 K-1

#22. If the pressure of an ideal gas decreases by 10% isothermally, then its volume will ______.

Decrease by 9%

Increase by 9%

Decrease by 10%

Increase by 11.11%

#23. Two systems at the same temperature are said to be in ______

chemical equilibrium

thermal equilibrium

mechanical equilibrium

electrical equilibrium

#24. A standing wave is produced on a string clamped at one end and free at the other. The length of the string ______.

Must be an odd integral multiple of 𝜆\4

Must be an odd integral multiple of 𝜆 2

Must be an even integral multiple of 𝜆

Must be an odd integral multiple of 𝜆

#25. In Young's double-slit experiment, a thin uniform sheet of glass is kept in front of the two slits, parallel to the screen having the slits. The resulting interference pattern will satisfy:

The interference pattern will remain unchanged

The fringe width will decrease

The fringe width will increase

The fringes will shift

#26. A parallel-plate capacitor has circular plates of radius 8 cm and plate separation I mm. What will be the charge on the plates if a potential difference of 100 V is applied across its plates?

1.78 × 10-8C

1.78 × 10-5C

4.3 × 104C

2 × 10-9C

#27. To find the resistance of a gold bangle, two diametrically opposite points of the bangle are connected to the two terminals of the left gap of a meter bridge. A resistance of 4 Ω is introduced in the right gap. What is the resistance of the bangle if the null point is at 20 cm from the left end?

2Ω

4Ω

8Ω

16Ω

#28. The magnetic dipole moment of the current loop is independent of ______

number of turns

area of loop

current in the loop

the magnetic field in which it is lying

#29. What is the magnetization of a bar magnet having a length of 6 cm and the area of cross-section 5 cm2?

1.2 × 10-4 A/m

3.3 × 104 A/m

1.25 × 10-4 A/m

3.3 × 10-4 A/m

#30. In which of the following devices, the eddy current is not used ______

Electromagnet

Induction furnace

Electric heater

Magnetic breaking in train

#31. In the expression e = –dΦ/dt, the -ve sign signifies ______

The induced emf is produced only when magnetic flux decreases

The induced emf is opposite to the direction of the flux.

The induced emf opposes the change in the magnetic flux

The induced emf is independent of change in magnetic flux.

#32. In a series LCR circuit, the phase difference between the voltage and the current is 45°. Then the power factor will be ______.

0.607

0.707

0.808

#33. The electrons are emitted in the photoelectric effect from a metal surface.

only if the frequency of radiation is above a certain threshold value.

only if the temperature of the surface is high.

at the that is independent of the nature of metal.

with a maximum velocity proportional to the frequency of incident radiation

#34. The speed of electron having de Broglie wavelength of 10 -10 m is ______ (me = 9.1 × 10-31 kg, h = 6.63 × 10-34 J-s)

7.28 × 106 m/s

4 × 106 m/s

8 × 105 m/s

5.25 × 105 m/s

#35. A LED emits visible white light when its ______

junction is reversed-biased.

depletion layer widens.

holes and electrons recombine.

junction becomes hot.

#36. A stone is tied to one end of a string. Holding the other end, the string is whirled in a horizontal plane with progressively increasing speed. It breaks at some speed because ______

The gravitational forces of the earth are greater than the tension in the string

The required centripetal force is greater than the tension sustained by the string

The required centripetal force is lesser than the tension in the string

The centripetal force is greater than the weight of the stone

#37. Two capillary tubes of radii 0.3 cm and 0.6 cm are dipped in the same liquid. The ratio of heights through which the liquid will rise in the tubes is

1: 2

2: 1

1: 4

4: 1

#38. Heating a gas in a constant volume container is an example of which process?

isochoric

adiabatic

isobaric

cyclic

#39. The SI unit of the potential gradient is ______

V/cm

V-m

V-cm

V/m

Finish

वर दिलेल्या चाचणी मालिकेतील प्रश्न वेगवेगळ्या वेबसाईटवरून घेतले आहेत, याचे श्रेय त्यांनाच जाते, मी ते फक्त शैक्षणिक हेतूने शेअर करत आहे.

निष्कर्ष

या परीक्षांची पुरेशी तयारी करण्यासाठी विद्यार्थ्यांनी आवश्यक अभ्यासक्रम आणि मागील वर्षाच्या परीक्षेतील प्रश्नांचे पुनरावलोकन केले पाहिजे. कारण परीक्षेची वेळ मर्यादा अत्यंत कठोर असू शकते, वेळेचे व्यवस्थापन महत्त्वाचे आहे. महाराष्ट्र बोर्डाच्या 12 व्या वर्गाच्या परीक्षांबद्दल अधिक माहिती मिळविण्यासाठी, तुम्हाला परीक्षेचे वेळापत्रक, अभ्यासक्रम आणि परीक्षेची माहिती मिळविण्यासाठी महाराष्ट्र शालेय परीक्षा मंडळाच्या अधिकृत वेबसाइटला भेट देणे आवश्यक आहे. तुम्ही तुमच्या शाळेशी किंवा आध्यात्मिक संस्थेशी संपर्क साधावा. ते तुम्हाला महाराष्ट्र बोर्ड 12वी इयत्तेबद्दल सर्वात विश्वासार्ह आणि अद्ययावत माहिती देऊ शकतात