२. विधुत चुम्बकिय तरङ्गले ऊर्जा संचारित गर्दछ र संचार प्रविधिमा  महत्त्वपूर्ण भूमिका .....

चन्द्रमा पृथ्वीभन्दा सानो छ । यसको आकार लगभग पृथ्वीको एक चौथाइ छ । यसकारण, चन्द्रमाको पिण्ड र .....

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Give a look at the picture above. You can see a cute kitten. Kitten is a baby of a cat. It is a pet animal. It is kept in a house by people like .....

Space has no air. Since sound waves require a material medium to propagate astronauts cannot talk to each other in space. Therefore, they use an electrical medium to talk to each other. These electrical waves do not require any material .....

A true echo is a single reflection of the sound source. The time delay is the extra distance divided by the speed of sound. Here, the sound gets reflected by the hill and repetition of sound occurs. This reflection of sound is called .....

The acid present in given foods are as follows: Name of foods Acid present Milk Curd Apple Mango Vinegar Lactic acid Lactic acid Malic acid Tartaric acid, malic acid and citric .....

The present president of Nepal is Bidhya Devi .....

Gypsum is used to make plaster of Paris. Calcium Sulphate in its hydrated form(CaSO4.2H2O) is the chemical formula of Plaster of Paris. It is the property of calcium sulphate to be moldable in its hydrated form. But in its dehydrated form, it is .....

As the fish decomposes, gases fill the body cavity. The belly becomes a guts-filled balloon and the dead fish floats to the surface. Here, the dead fish comes up and float on the surface as its average density becomes less than that .....

We know,  Area of base of cone  = π r2,    [ r = radius of circular base] Curved surface area =  π r l    [ l = slant height of cone] Finally, TSA = Area of base of cone + Curved .....

When import is greater than export, we call that as trade loss. Five ways of reducing trade loss in Nepal are as follows: - Producing commodity having good quality. - Producing surplus amount of goods so that they can be exported. - Managing .....

An interim constitution is a constitution intended to serve during a transitional period until a permanent constitution is adopted. Some of the features of the interim the constitution of Nepal 2063 are: It regarded the citizen of Nepal as the .....

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The five permanent Member nations have the power to use the Veto in United Nations Security Council (UNSC). They are the United States, the United Kingdom, France, Russia and China. According to the article 27 of UN, each member of the .....

Foreign policy is the management of relationships and communications between the nations. It is based upon the agreements and the set of rules called protocols. Nepal's foreign policy is guided by the Principles of UN charter, Panchaseel and .....

The United Nations Organization was established after the end of Second World War on 24th. October 1945 A.D. Some of the major components of UNO are: General assembly. Security Council. The Economic and Social .....

The vivid aspects of conservation and importances of national heritages are as follows: - The long established cultural and religious importance remains intact. - It remains for the long time which acts as an identity for Nepal in an international .....

The co-operative movement started in Europe a long time ago. The shore porters society claims itself to be the first cooperatives that was established in 1498. This later transformed into a joint stock company from co-operative (mutual .....

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‘राम भात खाँदैन ।’ हुन्छ है । अकरण बनाउँदा क्रियापदमा को सुरुमा, बिचमा र अन्त्यमा जहाँ पनि .....

Protons have the positive charge. Electrons have the negative charge. An atom has an equal number of protons and electrons. The positive and negative charge cancel each other. So, the atom does not show any charge. Hence, the atom is .....

Application of copper are as follows: 1. Copper is used for making electrical parts. 2. It is also as heat exchangers. 3. It is used for making various copper alloys, such as brass and bronze. 4. It is used for making household utensils, .....

Here,  ∡ DAP =  ∡ BAP  .......i)   [ Since, AP is bisector of  ∡A.]  ∡DPA =  ∡BAP   ..................ii)   [ Alternate angles.] So,  ∡ DAP .....

Here,  ON is perpendicular to CD  and OM is perpendicular to AB.    [ Line joining the mid-point                                     .....

The distance around the edge of a circle is called circumference of circle. Look at the figure, If r be the radius of circle,  Circumference = C = 2 π r    , where, π = .....

Look at the figure, The distance around the edge of a circle is called circumference of circle. If r be the radius of circle,  Circumference = C = 2 π r    , where, π = .....

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Commander is a common naval and air force officer rank. Commander is also used as a rank or title in order formal organizations, including several police forces. Commander is also a generic term for an officer commanding any armed forces .....

The first woman judge of Nepal is Ambika .....

Hence, in a electromagnetic induction, two pins act as magnet after attracted by a bar magnet. Then, they both develop polarity opposite to each other. Hence, they repel each other and maintain a distance between the .....

Answer: poles of a magnet          ⟶   more magnetic force                     ring form (closed chain)⟶   demagnetization        .....

Biodiversity refers to the variety of life. "Bio" refers to "life" and "diversity", generally refers to "the variety and variability of life on Earth." It is seen in the number of species in an ecosystem .....

Economic planning is a resource allocation mechanism for the social-economical development of the nation and the community. It is the process by which key economic decisions are made or influenced by government. Economic planning is the process by .....

Answer: a. Prolongation of sound is called reverberation. b. The sound is produced by vibrations. c. The speed of sound in solids and liquid is greater than the speed of sound in air. d. The sound can not travel through vacuum. e. We can .....

These changes are due to change in weather. Daily changes in the weather are due to winds and storms. Seasonal changes are due to the Earth revolving around the sun. Because the Earth is flat and not round, the Sun's rays don't fall .....

In Nepal, electricity is generated from hydropower. Hydropower is defined as a power derived from the energy of falling water or fast running water. Hence, water is a source of electricity in Nepal. In Nepal, electricity is generated in .....

We have given, Equilateral triangle having area 729√3cm2. We know,  Area of equilateral triangle = √3/4 x a2 or, 729√3cm2 =  √3/4 x a2 or, a2 = 729 x 4cm2   or, a .....

Whereas, in a furnished room the sounds are absorbed by the materials kept in the room like furniture. Thus, it is .....

Here, We can write  115 units as, 115 units = 20 units + 95 units                So,  Total charge = Rs.80 + 95 x Rs. 7.30                     = .....

पृथ्वी एक ग्रह हो ।   चन्द्रमा, पृथ्वीलाई परिक्रमा गर्ने एक उपग्रह हो । चन्द्रमा को .....

For example, carbon dioxide is already naturally present in the atmosphere, but it becomes toxic when it increases more than natural concentrations. The rise in levels of carbon dioxide is one contributing factor to the .....

Social laws are formulated for the smooth running of the societies and to maintain social harmony. Social laws are closely related to customs and the traditions of the particular society. Social laws are implemented by social organizations like .....

Look at the  Pascal's triangle, From this we can get coefficients  So,

 (a+b)5 = a5 + 5.a4.b1 + 10.a3.b2 + 10.a2.b3 + 5.a1.b4 +b5.             = a5 + .....

Trade may be defined as an act of buying and selling goods and services within the nation or beyond the boundary. Nepal may improve the trade by: Diversifying its services and goods produced. Establishment of new industries for more .....

The following are the reasons behind trade deficit in Nepal: - Increment in the goods of import than the goods of export. - Lack of market for Nepali goods in the international market. - The inability of the industries to produce surplus amount .....

The following should be done to improve the foreign trade of Nepal: - The goods having high quality should be produced. - International market should be managed for the produced goods. - Export should be greater than import for trade surplus. - .....

You may know the area of Nepal. The area of Nepal is 1,77,181sq.k.m. And, here the people of different backgrounds live together. There is the presence of different castes, ethnics, languages, religions, festivals and cultural practices. Nepal .....