Vachasya

Aarani

Asked: May 10, 2021In: Class 9 Social Science

What lesson the Americans learnt from the events of dust storms?

NCERT Important Questions Class 9 Social Science History Chapter 6 Important NCERT Extra Questions NCERT Solutions for Class 9 Social Science Important NCERT Extra Questions Chapter 6 Peasants and Farmer NCERT Book Extra Questions for Session 2022-2023 CBSE Board ...

Aarani

Asked: May 10, 2021In: Class 9 Social Science

What were the effects of the dust storms in the 1930s in the southern plains?

NCERT Important Questions Class 9 Social Science History Chapter 6 Important NCERT Extra Questions NCERT Solutions for Class 9 Social Science Important NCERT Extra Questions Chapter 6 Peasants and Farmer NCERT Book Extra Questions for Session 2022-2023 CBSE Board ...

Etaha

Asked: April 29, 2021In: Class 10 Science

What is sex ratio?

NCERT Important Questions Class 10 Science Biology Chapter 8 Important NCERT Extra Questions Chapter 8 Our Environment NCERT Book Extra Questions for Session 2022-2023 CBSE Board and UP Board Others state Board

Ashok0210

Asked: April 27, 2021In: Class 12 Physics

In an experiment on photoelectric effect, the slope of the cut-off voltage versus frequency of incident light is found to be 4.12 × 10⁻¹⁵ V s. Calculate the value of Planck’s constant

Class 12 Physics CBSE and UP Board Dual Nature of Radiation and Matter Chapter-11 Exercise 11.6 NCERT Solutions for Class 12 Physics Chapter 11 Question-6

Ashok0210

Asked: April 27, 2021In: Class 12 Physics

The energy flux of sunlight reaching the surface of the earth is 1.388 × 10³ W/m² . How many photons (nearly) per square metre are incident on the Earth per second? Assume that the photons in the sunlight have an average wavelength of 550 nm

Class 12 Physics CBSE and UP Board Dual Nature of Radiation and Matter Chapter-11 Exercise 11.5 NCERT Solutions for Class 12 Physics Chapter 11 Question-5

satyanarayan123

Asked: April 27, 2021In: Class 10 Science

The most appropriate definition of a natural resource is that it is a substance commodity that is (a) present only on land.(b) a gift of nature which is very useful to mankind. (c) a man-made substance placed in nature.(d) available only in the forest

CBSE 2022-2023, NCERT Science, CH: 16 Sustainable Management of Natural Resources, Important Questions, Important MCQ , Class 10 Biology CBSE Board and other state board. NCERT book extra Questions.

Ashok0210

Asked: April 27, 2021In: Class 12 Physics

Monochromatic light of wavelength 632.8 nm is produced by a helium-neon laser. The power emitted is 9.42 mW. (a) Find the energy and momentum of each photon in the light beam, (b) How many photons per second, on the average, arrive at a target irradiated by this beam? (Assume the beam to have uniform cross-section which is less than the target area), and (c) How fast does a hydrogen atom have to travel in order to have the same momentum as that of the photon?

Class 12 Physics CBSE and UP Board Dual Nature of Radiation and Matter Chapter-11 Exercise 11.4 NCERT Solutions for Class 12 Physics Chapter 11 Question-4

Ashok0210

Asked: April 27, 2021In: Class 12 Physics

The photoelectric cut-off voltage in a certain experiment is 1.5 V. What is the maximum kinetic energy of photoelectrons emitted?

Class 12 Physics CBSE and UP Board Dual Nature of Radiation and Matter Chapter-11 Exercise 11.3 NCERT Solutions for Class 12 Physics Chapter 11 Question-3

Ashok0210

Asked: April 27, 2021In: Class 12 Physics

The work function of caesium metal is 2.14 eV. When light of frequency 6 ×10¹⁴ Hz is incident on the metal surface, photoemission of electrons occurs. What is the (a) maximum kinetic energy of the emitted electrons, (b) Stopping potential, and (c) maximum speed of the emitted photoelectrons?

Class 12 Physics CBSE and UP Board Dual Nature of Radiation and Matter Chapter-11 Exercise 11.2 NCERT Solutions for Class 12 Physics Chapter 11 Question-2

Ashok0210

Asked: April 27, 2021In: Class 12 Physics

Find the (a) maximum frequency, and (b) minimum wavelength of X-rays produced by 30 kV electrons.

Class 12 Physics CBSE and UP Board Dual Nature of Radiation and Matter Chapter-11 Exercise 11.1 NCERT Solutions for Class 12 Physics Chapter 11 Question-1

Vachasya

What is sex ratio?

In an experiment on photoelectric effect, the slope of the cut-off voltage versus frequency of incident light is found to be 4.12 × 10⁻¹⁵ V s. Calculate the value of Planck’s constant

The energy flux of sunlight reaching the surface of the earth is 1.388 × 10³ W/m² . How many photons (nearly) per square metre are incident on the Earth per second? Assume that the photons in the sunlight have an average wavelength of 550 nm

The most appropriate definition of a natural resource is that it is a substance commodity that is (a) present only on land.(b) a gift of nature which is very useful to mankind. (c) a man-made substance placed in nature.(d) available only in the forest

The photoelectric cut-off voltage in a certain experiment is 1.5 V. What is the maximum kinetic energy of photoelectrons emitted?

The work function of caesium metal is 2.14 eV. When light of frequency 6 ×10¹⁴ Hz is incident on the metal surface, photoemission of electrons occurs. What is the (a) maximum kinetic energy of the emitted electrons, (b) Stopping potential, and (c) maximum speed of the emitted photoelectrons?

Find the (a) maximum frequency, and (b) minimum wavelength of X-rays produced by 30 kV electrons.

Which is the best website providing NCERT Solutions?

NCERT Books

Where can I get NCERT books in PDF format?

NIOS

NCERT Solutions

Sign Up

Sign In

Forgot Password

Tiwari Academy Discussion Latest Questions