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Vivek Singh

Vivek Singh

HOD Physics @ Unacademy Bhilai

Former Director — Vibrant Academy | Former Faculty — Aakash Institute
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JEE Mains NEET UG CBSE Class 11 CBSE Class 12 NCERT DC Pandey SL Arora
Two strips of metal are riveted together at their ends by four rivets, each of diameter 6.0 mm.

Two strips of metal are riveted together at their ends by four rivets, each of diameter 6.0 mm.

January 15, 2025

Description Two strips of metal are riveted together at their ends by four rivets, each of diameter 6.0 mm. What is the maximum tension that can be exerted by the riveted strip if the shearing stress on the rivet is not to exceed 6.9 × 107 Pa? Assume that each rivet is to carry one

Irodov problem 3.310 || NTA Abhyas Q. A long solenoid of cross-sectional radius a has a thin insulat

Irodov problem 3.310 || NTA Abhyas Q. A long solenoid of cross-sectional radius a has a thin insulat

January 14, 2025

Description A long solenoid of cross-sectional radius a has a thin insulated wire ring tightly put on its winding; one half of the ring has the resistance η times that of the other half. The magnetic induction produced by the solenoid varies with time as B = bt, where b is a constant. Find the

Half deflection Method ||JEE MAINS/NEET || Finding resistance and figure of merit of galvanometer

Half deflection Method ||JEE MAINS/NEET || Finding resistance and figure of merit of galvanometer

January 13, 2025

Description Welcome to PhysicsMonk.com – India’s Largest Platform for Instant Doubt Solutions PhysicsMonk.com is the ultimate destination for instant video solutions to your doubts in Physics—from Class 11th to JEE Advanced and NEET level. With a growing library of over 15 lakh+ expert-created video solutions, we make learning fast, easy, and effective. Just click a

The reading of pressure metre attached with a closed pipe is  4.5 × 10 4 N / m 2 . On opening the va

The reading of pressure metre attached with a closed pipe is 4.5 × 10 4 N / m 2 . On opening the va

January 13, 2025

Description The reading of pressure metre attached with a closed pipe is 4.5 × 10 4 N / m 2 . On opening the valve, water starts flowing and the reading of pressure metre falls to 2.0 × 10 4 N / m 2 . The velocity of water is found to be √ V

A sphere of relative density σ and diameter D has concentric cavity of diameter d. The ratio of D d

A sphere of relative density σ and diameter D has concentric cavity of diameter d. The ratio of D d

January 12, 2025

Description A sphere of relative density σ and diameter D has concentric cavity of diameter d. The ratio of D /d , if it just floats on water in a tank is Welcome to PhysicsMonk.com – India’s Largest Platform for Instant Doubt Solutions PhysicsMonk.com is the ultimate destination for instant video solutions to your doubts

An ice cube is floating in water above which a layer of lighter oil is poured..

An ice cube is floating in water above which a layer of lighter oil is poured..

January 12, 2025

Description An ice cube is floating in water above which a layer of lighter oil is poured. As the ice melts completely, the level of interface and the upper most level of oil will respectively (a) rise and fall (b) fall and rise (c) not change and no change (d) not change and fall Welcome

A single current carrying loop of wire carrying current I flowing in anticlockwise direction seen

A single current carrying loop of wire carrying current I flowing in anticlockwise direction seen

January 12, 2025

Description A single current carrying loop of wire carrying current I flowing in anticlockwise direction seen from +ve z direction and lying in xy plane in shown in figure. The plot of ^ j component of magnetic field (By) at a distance ‘a’ (less than radius of the coil) and on yz plane vs z

A particle of mass m is kept at x = 0. The graph of potential energy and displacement along x-axis

A particle of mass m is kept at x = 0. The graph of potential energy and displacement along x-axis

January 10, 2025

Description A particle of mass m is kept at x = 0. The graph of potential energy and displacement along x-axis is shown in the figure. Now, if particle is slightly displaced from its equilibrium position then time period of oscillation of particle is Welcome to PhysicsMonk.com – India’s Largest Platform for Instant Doubt Solutions

Rare Question of topic: In the experiment to determine the galvanometer resistance by half-deflecti

Rare Question of topic: In the experiment to determine the galvanometer resistance by half-deflecti

January 8, 2025

Description In the experiment to determine the galvanometer resistance by half-deflection method, the plot of 1 θ vs the resistance (R) of the resistance box is shown in the figure. The figure of merit of the galvanometer is ………….. ×10–1 A/division Welcome to PhysicsMonk.com – India’s Largest Platform for Instant Doubt Solutions PhysicsMonk.com is the

The figure shows a pipe of uniform cross-section inclined in a vertical A plane. A U-tube manometer

The figure shows a pipe of uniform cross-section inclined in a vertical A plane. A U-tube manometer

January 5, 2025

Description The figure shows a pipe of uniform cross-section inclined in a vertical A plane. A U-tube manometer is connected between the points A and B. If the liquid of density P 0 flows with velocity v 0 in the pipe, Then the the reading h of the manometer is Welcome to PhysicsMonk.com – India’s

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