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NEET - Grade 12 - Physics - Atoms - Introduction and Snapshot of Atoms - Study ref# 839

Introduction: By the nineteenth century, enough evidence had accumulated in favour of atomic hypothesis of matter. In 1897, the experiments on electric discharge through gases carried out by the English physicist J.J. Thomson (1856 - 1... read more

NEET - Grade 12 - Physics - Alternating Current - Introduction and Snapshot of Alternating Current - Study ref# 825

Following section must be covered to understand the Alternating Current: 1. Introduction 2. AC Voltage Applied to a Resistor 3. Representation of AC Current and Voltage by Rotating Vectors – Phasors 4. AC Voltage Applied to an In... read more

NEET - Grade 11 - Physics - Oscillations - Importance and Snapshot of Oscillations - Study ref# 730

Introduction: The study of oscillatory motion is basic to physics; its concepts are required for the understanding of many physical phenomena. In musical instruments like the sitar, the guitar or the violin, we come across vibrating st... read more

NEET - Grade 11 - Physics - Oscillations - Importance and Snapshot of Oscillations - Study ref# 731

Following sections must be covered to understand Oscillations: 1. Introduction 2. Periodic and oscillatory motions 3. Simple harmonic motion 4. Simple harmonic motion and uniform circular motion 5. Velocity and acceleration in si... read more

NEET - Grade 11 - Physics - Oscillations - Target Setup for Oscillations - Study ref# 732

Student requires to achieve the following milestones to get better grip over Oscillations. The milestones / targets are as follows:- Starting Point: Days 0Test TypeAppear on TestTarget TestsScorePractice Test000%Chapter Test000%S... read more

NEET - Grade 11 - Physics - Oscillations - Study ref# 958

What is the total distance travelled by a body executing SHM in a time equal to its time period, if its amplitude is A? Answer: Total distance travelled in time T is .... read more

NEET - Grade 11 - Physics - Oscillations - Study ref# 959

When are the velocity and acceleration in the same direction in SHM? Answer: When a particle executing SHM is moving from extreme position towards mean position, then the velocity and acceleration are in the same direction i.e. towards the m... read more

NEET - Grade 11 - Physics - Oscillations - Study ref# 960

On an average a human heart is found to beat 75 times in a minute. Calculate its beat frequency and period. Answer: The beat frequency of heart is The time period  read more

NEET - Grade 11 - Physics - Oscillations - Study ref# 961

How does the period of spring mass system change, when it is made to oscillate horizontally and then vertically? Answer: The time period remains same in both the cases.... read more

NEET - Grade 11 - Physics - Oscillations - Study ref# 962

What force keep the simple pendulum in simple harmonic motion? Answer: The component of weight due to gravitational force ( i.e.  keeps the simple pendulum in simple harmonic motion.... read more

NEET - Grade 11 - Physics - Oscillations - Study ref# 963

A vibrating simple pendulum of period T is placed in a lift which is accelerating upwards. What will be the effect on the time period? Answer: As effective value of acceleration due to gravity increases i.e. read more

NEET - Grade 11 - Physics - Oscillations - Study ref# 964

Can a pendulum watch give correct time in an artificial satellite? Explain. Answer: No, in an artificial satellite, the body is in weightlessness condition, where g = 0. The time period of pendulum watch read more

NEET - Grade 11 - Physics - Oscillations - Study ref# 965

The maximum acceleration of a simple harmonic oscillator is  and maximum velocity is . What is the displacement amplitude? Answer: Let A ... read more

NEET - Grade 11 - Physics - Oscillations - Study ref# 966

What are the phase relationship between displacement, velocity and acceleration in SHM? Answer: In SHM, the velocity leads the displacement by a phase  radians and acceleration leads velocity ... read more

NEET - Grade 11 - Physics - Oscillations - Study ref# 967

Can the function  represent the simple harmonic function? Explain. Answer: The function,    Or,   read more

NEET - Grade 11 - Physics - Oscillations - Study ref# 968

The time period of an oscillating body is given by  What is the force equation for this body? Answer: Given time period  Compare this wit... read more

NEET - Grade 11 - Physics - Oscillations - Study ref# 969

The period of vibration of a mass m suspended by a spring is T. the spring is cut into n equal parts and the body is again suspended by one of the pieces. Find the time period of oscillation of the mass. Answer: Let k be the spring constant of ... read more

NEET - Grade 11 - Physics - Oscillations - Study ref# 970

A girl sitting on a swing stands up. What will be the effect on the periodic time of the swing? Answer: The time period, T will decrease. Reason: In the standing position, the position of centre of mass of the girl shifts upwards. Due to ... read more

NEET - Grade 11 - Physics - Oscillations - Study ref# 971

At what displacement (i) the potential energy of a simple harmonic oscillator is maximum and minimum (ii) the kinetic energy is maximum and minimum? Answer: (i)     The potential energy of a particle executing SHM is give... read more

NEET - Grade 11 - Physics - Oscillations - Study ref# 972

Are the functions  and   (i)     Periodic and (ii)  harmonic? Explain. Answer: (i)     The fun... read more

NEET - Grade 11 - Physics - Oscillations - Study ref# 973

The amplitude of a simple harmonic oscillation is doubled. How does this affect (i) periodic time (ii) maximum velocity (iii) maximum acceleration and (iv) maximum energy? Answer: (i)     Time period of oscillation of sim... read more

NEET - Grade 11 - Physics - Oscillations - Study ref# 974

What is the length of a second pendulum? Answer: A second pendulum has time period   If  is the length of this pendulum, then               read more

NEET - Grade 11 - Physics - Oscillations - Study ref# 975

What do you mean by resonance? Amplitude of a wave is represented by . Under which conditions, resonance will occur? Answer: The phenomenon of increasing amplitude when the driving force i... read more

NEET - Grade 11 - Physics - Oscillations - Study ref# 976

Derive the expression for potential energy and kinetic energy of a simple harmonic motion represented by . Answer: Displacement of simple harmonic motion is read more

NEET - Grade 11 - Physics - Oscillations - Study ref# 977

Show that total energy of a simple harmonic motion is constant and draw the curve for potential energy, kinetic energy and total energy with time for displacement equation Answer: For displac... read more

NEET - Grade 11 - Physics - Oscillations - Study ref# 978

Derive the expression for frequency of a simple pendulum. Answer: A simple pendulum is defined as a bob of mass m suspended from a point O by a string of length  and of negligible mass. When the bob is pulled aside from its mean posi... read more

NEET - Grade 11 - Physics - Oscillations - Study ref# 979

Derive the expression for frequency of a spring-block system when the block is kept on a floor and other side of spring is attached to a rigid wall. Answer:   Suppose a block of mass m is attached to the free end of a massless spring of ... read more

NEET - Grade 11 - Physics - Oscillations - Study ref# 980

Derive the expression for average potential energy and average kinetic energy for a simple harmonic oscillator represented by  and show that total energy of a simple harmonic oscillator is equ... read more

NEET - Grade 11 - Physics - Oscillations - Study ref# 981

What is the percentage change in the time period, if the length of simple pendulum increases by 3%? Answer: Time period of simple pendulum of length   Now taking log one both sides of the equ... read more

NEET - Grade 11 - Physics - Oscillations - Study ref# 982

What is the frequency of a second’s pendulum in an elevator moving up with an acceleration of  ? Answer: Time period of second pendulum is  So, frequency  read more

NEET - Grade 11 - Physics - Oscillations - Study ref# 983

The period of oscillation of a mass m kg is suspended by an ideal spring is 1.5 sec. if an additional mass 3 kg be suspended, the time period is increased by 1 sec, find the value of m. Answer: In first case, read more

NEET - Grade 11 - Physics - Oscillations - Study ref# 984

A particle executing SHM given by  in SI units. Find (i) amplitude (ii) frequency and (iii) time period of vibration. Answer: Given,  Compa... read more

NEET - Grade 11 - Physics - Oscillations - Study ref# 985

A body weighing 10 kg is executing SHM, has a velocity of 6 ms-1, after one second of starting from the mean position, find its kinetic energy, potential energy and total energy. Given, its time period is 6 second. Answer: Given that, m = 10... read more

NEET - Grade 11 - Physics - Oscillations - Study ref# 986

What is the ratio between the potential energy and the total energy of a particle executing SHM, when its displacement is half of its amplitude? Answer:           ... read more

NEET - Grade 11 - Physics - Oscillations - Study ref# 987

A particle is executing S.H.M Identify the positions of the particle where: 1. K.E. of the particle is zero. 2. P.E. is zero. 3. P.E. is one fourth of the total energy. 4. P.E. and K.E. are equal. Answer: 1. At extreme position ... read more

NEET - Grade 12 - Physics - Electrostatic Potential and Capacitance - Study ref# 10487

Calculate the potential energy of a point charge –q placed along the axis due to a charge +Q uniformly distributed along a ring of radius R. Sketch potential energy as a function of axial distance z from the centre of the ring. Looking at gr... read more

NEET - Grade 12 - Physics - Magnetism and Matter - Study ref# 10541

A bar magnet of magnetic moment m and moment of inertia I(about center, perpendicular to length) is cut into two equal pieces, perpendicular to length. Let T be the period of oscillations of the original magnet about an axis through the mid-... read more

NEET - Grade 12 - Physics - Electromagnetic Induction - Study ref# 10554

A rectangular frame of wire is placed in a uniform magnetic field directed outwards, normal to the paper. AB is connected to a spring which is stretched to  and then released at time t = 0.... read more

NEET - Grade 12 - Physics - Alternating Current - Study ref# 10569

Show that in the free oscillations of an LC circuit, the sum of energies stored in the capacitor and the inductor is constant in time. Answer: At an instant t, charge q on the capacitor and the current i are given by: read more

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