Tiwari Academy Discussion

Saksi

Asked: May 3, 2021In: Class 10 Science

Is light a ray or a wave?

NCERT Important Questions Class 10 Science physics Chapter 10 Important NCERT Extra Questions Chapter 10 Light – Reflection and Refraction NCERT Book Extra Questions for Session 2022-2023 CBSE Board and UP Board Others state Board

Saksi

Asked: May 3, 2021In: Class 10 Science

Does light bend due to change of media?

NCERT Important Questions Class 10 Science physics Chapter 10 Important NCERT Extra Questions Chapter 10 Light – Reflection and Refraction NCERT Book Extra Questions for Session 2022-2023 CBSE Board and UP Board Others state Board

Saksi

Asked: May 3, 2021In: Class 10 Science

Does light require a medium to travel?

NCERT Important Questions Class 10 Science physics Chapter 10 Important NCERT Extra Questions Chapter 10 Light – Reflection and Refraction NCERT Book Extra Questions for Session 2022-2023 CBSE Board and UP Board Others state Board

Saksi

Asked: May 3, 2021In: Class 10 Science

What is the speed of light?

NCERT Important Questions Class 10 Science physics Chapter 10 Important NCERT Extra Questions Chapter 10 Light – Reflection and Refraction NCERT Book Extra Questions for Session 2022-2023 CBSE Board and UP Board Others state Board

Bandish

Asked: February 16, 2021In: Class 11 Biology

Why are living organisms classified?

NCERT Solutions for Class 11 Science The living world 1 Important Board Questions The living world NCERT Books for Session 2022-2023 CBSE Board and UP Board Question : 1

Ashok0210

Asked: February 13, 2021In: Class 12 Physics

Suppose that the particle in Exercise in 1.33 is an electron projected with velocity vₓ = 2.0 × 10⁶ m s⁻¹. If E between the plates separated by 0.5 cm is 9.1 × 10² N/C, where will the electron strike the upper plate? (|e|=1.6 × 10⁻¹⁹ C, mₑ = 9.1 × 10 ⁻³¹kg.)

Class-12th Physics, CBSE and UP Board Electric Charges and Fields, Chapter-1, Exercise -1, Additional Exercise, Q-1.34 NCERT Solutions for Class 12th Physics

Ashok0210

Asked: February 13, 2021In: Class 12 Physics

A particle of mass m and charge (–q) enters the region between the two charged plates initially moving along x-axis with speed vₓ (like particle 1 in Fig. 1.33). The length of plate is L and an uniform electric field E is maintained between the plates. Show that the vertical deflection of the particle at the far edge of the plate is qEL² /(2m vₓ² ). Compare this motion with motion of a projectile in gravitational field discussed in Section 4.10 of Class XI Textbook of Physics.

Class-12th Physics, CBSE and UP Board Electric Charges and Fields, Chapter-1, Exercise -1, Additional Exercise, Q-1.33 NCERT Solutions for Class 12th Physics

Ashok0210

Asked: February 13, 2021In: Class 12 Physics

2 (a) Consider an arbitrary electrostatic field configuration. A small test charge is placed at a null point (i.e., where E = 0) of the configuration. Show that the equilibrium of the test charge is necessarily unstable. (b) Verify this result for the simple configuration of two charges of the same magnitude and sign placed a certain distance apart.

Class-12th Physics, CBSE and UP Board Electric Charges and Fields, Chapter-1, Exercise -1, Additional Exercise, Q-1.32 NCERT Solutions for Class 12th Physics

Ashok0210

Asked: February 13, 2021In: Class 12 Physics

It is now believed that protons and neutrons (which constitute nuclei of ordinary matter) are themselves built out of more elementary units called quarks. A proton and a neutron consist of three quarks each. Two types of quarks, the so called ‘up’ quark (denoted by u) of charge + (2/3) e, and the ‘down’ quark (denoted by d) of charge (–1/3) e, together with electrons build up ordinary matter. (Quarks of other types have also been found which give rise to different unusual varieties of matter.) Suggest a possible quark composition of a proton and neutron.

Class-12th Physics, CBSE and UP Board Electric Charges and Fields, Chapter-1, Exercise -1, Additional Exercise, Q-1.1 NCERT Solutions for Class 12th Physics

Ashok0210

Asked: February 13, 2021In: Class 12 Physics

Obtain the formula for the electric field due to a long thin wire of uniform linear charge density λ without using Gauss’s law. [Hint: Use Coulomb’s law directly and evaluate the necessary integral.]

Class-12th Physics, CBSE and UP Board Electric Charges and Fields, Chapter-1, Exercise -1, Additional Exercise, Q-1.30 NCERT Solutions for Class 12th Physics

Is light a ray or a wave?

Does light bend due to change of media?

Does light require a medium to travel?

What is the speed of light?

Why are living organisms classified?

Suppose that the particle in Exercise in 1.33 is an electron projected with velocity vₓ = 2.0 × 10⁶ m s⁻¹. If E between the plates separated by 0.5 cm is 9.1 × 10² N/C, where will the electron strike the upper plate? (|e|=1.6 × 10⁻¹⁹ C, mₑ = 9.1 × 10 ⁻³¹kg.)

Obtain the formula for the electric field due to a long thin wire of uniform linear charge density λ without using Gauss’s law. [Hint: Use Coulomb’s law directly and evaluate the necessary integral.]

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