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Definite integration formulas

Definite Integrals if  $\int f(x)  dx= g(x)$$\int_{a}^{b} f(x) dx =g(b) -g(a)$ Properties of Definite Integrals (I) $\int_{a}^{b} f(x) dx= \int_{a}^{b} f(t) dt $ (II) $\int_{a}^{b} f(x) dx=- \int_{b}^{a} f(x) dx $ (III) $\int_{a}^{b} f(x) dx= \int_{a}^{c} f(x) dx + \int_{c}^{b} f(x) dx  $ where a<c <b (IV) $\int_{a}^{b} f(x) dx=\int_{a}^{b} f((a+b-x)) dx$ (V) $\int_{0}^{a} f(x) […]

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How to solve Simple Harmonic Motion(SHM) problems effectively for JEE Main/Advanced

What is Periodic Motion : In Physics, a motion that is regular and repeating is called Periodic Motion. The time to complete one full motion is called the Time period of the Periodic Motion
What is SHM: A Simple Harmonic Motion is a special case of Periodic motion where a physical quatity varies sinusoidally.In this Periodic motion the restoring force is directly proportional to the displacement. The object oscillates between two position and Motion is sinusoidally in nature.

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Class 10 CBSE Reflection and refraction extra questions

Q1. What is the difference between reflection and refraction?
Q2.Refraction is caused by
a. different wave speeds.
b. more than one reflection.
c. displaced images.
d. bending.

Q3. What will happen to ray of light when it travels from rarer medium to a denser medium ?

Q4. What is absolute refractive index ?
Q5. If refractive index of glass is 1.65, What is the speed of light in glass. ?

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