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Vivek Singh
HOD Physics @ Unacademy Bhilai
Former Director — Vibrant Academy | Former Faculty — Aakash Institute
In his free time, he provides career counseling on Dial Me 24/7
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NEET2025:An oxygen cylinder of volume 30 litre has 18.20 moles of oxygen. After some oxygen is with
May 13, 2025
Description An oxygen cylinder of volume 30 litre has 18.20 moles of oxygen. After some oxygen is withdrawn from the cylinder, its gauge pressure drops to 11 atmospheric pressure at temperature 27°C. The mass of the oxygen withdrawn from the cylinder is nearly equal to: [Given, R=100/12 Jmol-1K-1 and molecular mass of O2 = 32,

NEET 2025:In a certain camera, a combination of four similar thin convex lenses are arranged axially
May 12, 2025
Description In a certain camera, a combination of four similar thin convex lenses are arranged axially in contact. Then the power of the combination and the total magnification in comparison to the power (p) and magnification (m) for each lens will be, respectively (1) 4p and 4m 2) p4 and 4m. 3) 4p and m4

NEET 2025:A 2 amp current is flowing through two different small circular copper coils having radii
May 12, 2025
Description A 2 amp current is flowing through two different small circular copper coils having radii ratio 1 : 2. The ratio of their respective magnetic moments will be (1) 1 : 4 2) 1 : 2. 3) 2 : 1 4) 4 : 1 Frequently Asked Questions How to prepare for NEET Physics? For

NEET 2025: AB is a part of an electrical circuit (see figure). The potential difference “VA – VB”, a
May 12, 2025
Description AB is a part of an electrical circuit (see figure). The potential difference “VA – VB”, at the instant when current i = 2 A and is increasing at a rate of 1 amp/second is: 1) 5 volt 2) 6 volt. 3) 9 volt 4) 10 volt Frequently Asked Questions How to prepare for

NEET2025:The electric field in a plane electromagnetic wave is given byEz = 60 cos (5x + 1.5 × 109
May 12, 2025
Description The electric field in a plane electromagnetic wave is given by Ez = 60 cos (5x + 1.5 × 109 t) V/m. Then expression for the corresponding magnetic field is (here subscripts denote the direction of the field) : (1) By = 2 × 10–7 cos (5x + 1.5 × 109 t)T (2) Bx

NEET 2025:A ball of mass 0.5 kg is dropped from a height of 40 m. The ball hits the ground and rises
May 12, 2025
Description A ball of mass 0.5 kg is dropped from a height of 40 m. The ball hits the ground and rises to a height of 10 m. The impulse imparted to the ball during its collision with the ground is (Take g = 9.8 m/s2) (1) 21 NS 2) 7 NS. 3) 0 4)

NEET 2025:A bob of heavy mass m is suspended by a light string of length l. The bob is given a horiz
May 12, 2025
Description A bob of heavy mass m is suspended by a light string of length l. The bob is given a horizontal velocity v0 as shown in figure. If the string gets slack at some point P making an angle θ from the horizontal, the ratio of the speed v of the bob at point

NEET 2025:The current passing through the battery in the given circuit, is:
May 12, 2025
Description The current passing through the battery in the given circuit, is: Frequently Asked Questions How to prepare for NEET Physics? For NEET Physics preparation, focus on NCERT textbooks first, then move to reference books. Create a topic-wise study plan covering Mechanics, Thermodynamics, Electromagnetism, Optics, and Modern Physics. Solve previous years’ questions and take regular

NEET 2024:A microscope has an objective of focal length 2 cm, eyepiece of focal length 4 cm
May 12, 2025
Description A microscope has an objective of focal length 2 cm, eyepiece of focal length 4 cm and the tube length of 40 cm. If the distance of distinct vision of eye is 25 cm, the magnification in the microscope is (1) 100 2) 125. 3) 150 4) 250 Frequently Asked Questions How to prepare
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