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Maths NCERT Class 10 Chapter 11 Solutions: In this chapter on Construction, we will apply the rules of geometry learned so far, and construct shapes from dimensions and measurements provided. Using tools such as a ruler, pencil, and protractor, students will form shapes according to different problems in the exercises. Referring to Construction Class 10 PDF solutions is essential for this chapter to check if the structure created by students is as intended in the question. NCERT Solutions for Class 10 Maths Chapter 11 PDF. Chapter Areas Related To Circles. Math NCERT Solution Class 10 Chap. 10th Class Maths solutions,ch 7, lec 1, Exercise Question no 1 to 5 - 10th Class Math. Class 10 Maths Standard myboat050 boatplans - Free download as PDF File .pdf), Text File .txt) or read online for free.� NCERT Solutions for Class 10 Maths NCERT Solutions for Class 10 Maths solved by expert teachers and it is as an indispensable tool for the students. We have taken utmost care while preparing Maths NCERT Solutions for class 10 and the solutions are written in a proper form and as per the marking scheme suggested by the CBSE. NCERT Solutions for Class 10 Maths Chapter 1 Real. Numbers ? Real Numbers Class 10 Ex ? Real Numbers Class 10 Ex ? Real Numbers Class 10 Ex ? Real Numbers Class 10 Ex ? Extra Questions for Class 10 Maths Real Numbers. NCERT Solutions for Class 10 Maths Chapt.

Question 1. Question 2. Will the answer change if the temperature and pressure are changed? Calculation of total number and tatal mass of neutrons No. Calculation of total number and mass of protons No. No, the answer will not change upon changing the temperature and pressure because only the number of protons and mass of protons are involved.

Question 3. How many protons and neutrons are present in the following nuclei Answer:. Question 4. Question 5. Yellow light emitted from a sodium lamp has a wavelength 2 of nm.

Calculate the frequency v and wave number v of yellow light. Question 6. Question 7. Calculate the wavelength, frequency, and wavenumber of lightwave whose period is 2. Question 8. What is the number of photons of light with wavelength pm which provide 1 Joule of energy? Question 9. Calculate i the energy of the photon, ii the kinetic energy of the emission iii the velocity of the photoelectron.

Question Electromagnetic radiation of wavelength nm is just sufficient to ionise the sodium atom. Calculate the ionisation energy of sodium in k-J mol A 25 watt bulb emits monochromatic yellow light of wavelength 0.

Calculate the rate of emission of quanta per second. Electrons are emitted with zero velocity from a metal surface when it is exposed to radiation of wavelength A. Calculate threshold frequency v 0 and work function W 0 of the metal. What is the colour corresponding to this wavelength?

Answer: The maximum no. What is the energy associated with the fifth orbit? Calculate the wave number for the longest wavelength transition in the Balmer series of atomic hydrogen. What is the energy in joules required to shift the electron of the hydrogen atom from the first Bohr orbit to the fifth Bohr orbit and what is the wavelength of light emitted when the electron returns to the ground state?

The ground state electronic energy is � 2. The electronic energy in hydrogen atom is given by E n What is the longest wavelength of light in cm that can be used to cause this transition? Calculate the wavelength of an electron moving with a velocity of 2. The mass of an electron is 9. If its kinetic energy is 3. Which of the following are iso-electronic species? An electron is in one of the 3d orbitals. Give the possible values of n, l and nil for the electron.

An atom of an element contains 29 electrons and 35 neutrons. Deduce i the number of protons and ii the electronic configuration of the element. Answer: No. What are the possible values of l and m l? From the following sets of quantum numbers, state which are possible. Explain why the others are not possible.

It can have 0 value. It must be zero. How many electrons in an atom may have the following quantum numbers? Show that the circumference of the Bohr orbit for the hydrogen atom is an integral multiple of the de Broglie wavelength associated with the electron revolving around the orbit.

Calculate the number of atoms present in : i 52 moles of He ii 52 u of He iii 52 g of He. If the diameter of carbon atom is 0. Calculate the radius of carbon atom if the length of this arrangement is 2. The diameter of zinc atom is 2. Calculate : a the radius of zinc atom in pm b number of atoms present in a length of 1. A certain particle carries 2. Calculate the number of electrons present in it.

In Rutherford experiment, generally the thin foil of heavy atoms like gold, platinum etc. If a thin foil of light atoms like aluminium etc. If a thin foil of lighter atoms like aluminium etc. As a result, the number of a-particles deflected will be quite less and the particles which are deflected back will be negligible. Answer in brief. The atomic number of the element can be identified from its symbol because no two elements can have the atomic number.

However, the mass numbers have to be mentioned in order to identify the elements. Similarly, symbol 35Br cannot be accepted because mass number has to be mentioned. This is needed to differentiate the isotopes of an element. An element with mass number 81 contains Assign the symbol to the element.

Answer: An element can be identified by its atomic number only. Let us find the atomic number. An ion with mass number 37 possesses one unit of negative charge. Answer: Let the no. An ion with mass number 56 contains 3 units of positive charge and Assign symbol to the ion. Arrange the following type of radiations in increasing order of wavelength : a radiation from microwave oven b amber light from traffic signal c radiation from FM radio d cosmic rays from outer space and e X-rays. Nitrogen laser produces radiation of wavelength of If the number of photons emitted is 5.

Neon gas is generally used in sign boards. If it emits strongly at nm, calculate : a frequency of emission b the distance travelled by this radiation in 30s c energy of quantum d number of quanta present if it produces 2 J of energy.

In astronomical observations, signals observed from the distant stars are generally weak. If the photon detector receives a total of 3. Life times of the molecules in the excited states are often measured by using pulsed radiation source of duration nearly in the nano second range. If the radiation source has the duration of 2 ns and the number of photons emitted during the pulse source is 2. The longest wavelength doublet absorption transition is observed at nm and Calculate the frequency of each transition and energy difference between two excited states.

The work function for cesium atom is 1. Calculate a the threshold wavelength and b the threshold frequency of the radiation. If the cesium element is irradiated with a wavelength nm, calculate the kinetic energy and the velocity of the ejected photoelectron Answer:. Following results are observed when sodium metal is irradiated with different wavelengths. Calculate threshold wavelength. The ejection of the photoelectrons from the silver metal in the photoelectric effect experiment can be stopped by applying the voltage of 0.

Calculate the work function for silver metal. If the photon of the wavelength pm strikes an atom, one of its inner bound electrons is ejected out with a velocity of 1. Calculate the energy with which it is bound to the nucleus. Find the region of the spectrum.

Calculate the wavelength for the emission transition if it starts from the orbit having radius 1. Name the series to which this transition belongs and the region of the spectrum.

Dual behaviour of matter proposed Byjus Class 6 Maths Pdf Results by de Broglie led to the discovery of electron microscope often used for the highly magnified images of biological molecules and other type of material. If the velocity of the electron in this microscope is 1.

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