Categories

## Beats

BEATSIf two tuning fork whose frequency is slightly different are sounded together , the sound we hear periodically fluctuates in intensity , i.e intensity increases and decreases suddenly . This periodic variations in intensity of sound are called beats. So we can define “ Beats are periodic vibration in the intensity of sound when two […]

Categories

## Syllabus class12th physics (Term-2) (2021-2022)

Important questions of ray optics Physics classes by Nayan jha providing the syllabus for term -2 CBSE (physics)Examination ; guided by CBSE( Distribution of marks may change in some circumstances) CBSE Class 12 Physics Syllabus Term – 2 (2021-22) Time: 2hrs  Max Marks: 35 SI. No. Chapter Name marks Unit–V Electromagnetic Waves 2-3 Chapter–8: Electromagnetic […]

Categories

## Important questions of oscillations

Important questions of oscillations- 1. What is meant by periodic and oscillatory motion? Distinguish between them. 2. What is meant by SHM . Find the expressions for displacement , velocity and acceleration. Also find the phase difference between them. 3. Find the potential energy and kinetic energy of a SHM and hence show that total […]

Categories

## Important questions of mechanical properties of fluid in rest

Important questions of mechanical properties of fluid in rest (Hydrostatics); This assignment contain all important questions based on the topic , liquid pressure, Pascal’s law, surface tension etc. It will help the students to prepare for the schools examination for class 11th. 1. Define thrust  and derive an expression for the pressure at depth in […]

Categories

## Case study question on Compound microscope

Compound microscope- A compound microscope is an optical instrument used for observing high magnified image of tiny objects. Magnifying power of compound microscope is defined as the ratio of the angle subtended at the eye by the final image to the angle subtended by the object , when both the final image and object at […]

Categories

## Case study question on astronomical telescope

Astronomical telescope- An astronomical telescope is an optical instrument which is used for observing distinct images of heavenly bodies libe stars, planets etc. It consists of two lenses . In normal adjustment of telescope , the final image is formed at infinity . Magnifying power of astronomical telescope in normal adjustment is defined as the […]

Categories

## Very important questions of thermodynamics

Important questions of thermodynamics- 1. What is the zeroth law of thermodynamics ? How does it lead us to the concept of temperature? 2. Define isothermal and adiabatic process . What are the conditions necessary for such process to occur? 3. State and explain the first law of thermodynamics. Also write its limitations. 4. Define […]

Categories

## Case study questions on ray optics

Case study based questions- 1. Total internal reflection – Total internal reflection is the phenomenon of reflection of light into denser medium at the interface of denser medium with rarer medium . For this phenomenon to occur necessary condition is that light must move from denser to rarer and angle of incidence in denser medium […]

Categories

## Short answer type questions of ray optics

Short answer type questions- (2 marks), This assignment provides Very important short answer type questions of ray optics which is very important for the class 12th board examinations. 1.What are the necessary conditions for the phenomenon of total internal reflection to occur . Also write the relation between refractive index and critical angle for a […]

Categories

## Important questions of thermal properties of matter

Important questions of thermal properties of matter This assignment provides all important questions of this chapter , which will be important for examinations point of view. 1. Briefly describe the various scale of temperature and give the relation between them. 2.Define coefficient of linear ,area and volume expansion , also find the relation between them. […]