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Gravitation mcq for NEET. We covered all the Gravitation mcq for NEET in this post for free so that you can practice well for the exam.
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mcq on Gravitation for NEET Students
When a metal wire is stretched and its length increases by 0.2%, the corresponding percentage rise in its resistance is approximately
(A) 0.5%
(B) 0.2%
(C) 0.8%
(D) 2%
Option c – 0.8%
A monochromatic Light beam with a wavelength of 500 nm passes through a slit 1 mm wide. If the Diffraction pattern is viewed on a screen placed 160 cm away, the spacing between the first dark fringes on either side of the central maximum is
(A) 2.4 cm
(B) 2.4 mm
(C) 1.6 cm
(D) 1.6 mm
Option d – 1.6 mm
A fixed horizontal wire carries 60 A of current. A second parallel wire above it carries 20 A, and experiences a magnetic repulsion of 0.04 N/m. The separation between the wires needed for the upper one to remain suspended due to this force is
(A) 4 mm
(B) 2.5 cm
(C) 6 mm
(D) 8 cm
Option c – 6 mm
An open organ pipe is suddenly closed at one end. If the fifth harmonic of the closed pipe is 100 Hz greater than the fundamental frequency of the original open pipe, the fundamental frequency of the open pipe is approximately
(A) 67 Hz
(B) 89.1 Hz
(C) 102 Hz
(D) 117 Hz
Option a – 67 Hz
A coil with a self-inductance of 20 mH carries a current defined by I = 0.2 sin(20t). The peak value of the induced emf across the coil is
(A) 1.2 V
(B) 0.6 V
(C) 0.2 V
(D) 0.08 V
Option d – 0.08 V
A 4-liter quantity of water at 30 °C is heated by a 1 kW heater. With the kettle’s lid open, Heat escapes at a steady rate of 160 J/s. How much time is needed to raise the temperature to 50 °C? (Take specific Heat of water as 4.2 kJ/kg·°C)
(A) 5 min 40 s
(B) 4 min 20 s
(C) 8 min 20 s
(D) 6 min 40 s
Option d – 6 min 40 s
During a fusion process where hydrogen is converted to helium, a Mass defect of 0.02866 u occurs. The energy released per atomic Mass unit is (1 u = 931 MeV)
(A) 2.67 MeV
(B) 26.7 MeV
(C) 6.675 MeV
(D) 13.35 MeV
Option c – 6.675 MeV
A short bar magnet is placed with its north pole directed towards the geographic north. If the neutral point is located 20 cm from its center and the Earth’s magnetic field is 0.4 × 10⁻⁴ T, the magnetic moment of the magnet is
(A) 6.3 A·m²
(B) 3.2 A·m²
(C) 0.5 A·m²
(D) 1.5 A·m²
Option b – 3.2 A·m²
A truck moves uniformly around a horizontal circular path of radius 25 m at 15 m/s. A pendulum bob is suspended from the ceiling by a rigid rod 80 cm long. The angle the rod makes with the vertical is (g = 10 m/s²)
(A) 42°
(B) 54°
(C) 45°
(D) 68°
Option a – 42°
In an experiment where force versus extension is plotted for a spring, if the same spring is used at half its original length, the OA line on the graph will
(A) shift toward the force axis
(B) shift toward the extension axis
(C) remain unchanged
(D) double in length
Option a – shift toward the force axis
The emission rate of electrons is directly related to the Light’s intensity when
(A) the frequency of the incident radiation is constant
(B) the work function is high
(C) both the incident frequency and the material’s surface are constant
(D) the stopping potential reaches its maximum
Option c – both the incident frequency and the material’s surface are constant
In a meter bridge setup, a null point is observed at 20 cm from one end when balancing resistance X against Y. If X is less than Y, what will be the new null point position from the same end if 4X is balanced against Y?
(A) 50 cm
(B) 80 cm
(C) 40 cm
(D) 70 cm
Option a – 50 cm
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