Explore topic-wise InterviewSolutions in Current Affairs.

(b) Frequency modulation

(b) Frequency modulation

(c) photoelectric current increases 

As the intensity of incident light increases, photoelectric current increases.

(d) A closed switch in series with a small resistance and a battery.

(c) B is increased by 14.4 times

In the condition of no deflection \(\frac{e}{m}\) = \(\frac{E^2}{2vB^2}\)

If m is increased by 208 times then B should be increased \(\sqrt{208}\) = 14.4 times

फोटोन ऊर्जा और संवेग का गमन करती है जिसका मान आवृत्ति पर निर्भर करता है। विभिन्न प्रकार की प्राकृतिक प्रक्रियाओं द्वारा फोटोन को नष्ट किया जा सकता है या उत्पन्न किया जा सकता है। खाली जगह (स्पेस) में फोटोन का वेग प्रकाश के वेग के बराबर होता है अर्थात फोटोन प्रकाश के वेग से गति करता है।

Both A and R are correct and R is the correct explanation of A.

She was not the best person you could have as a friend, but I liked her for her honesty and uniqueness. Kathy and I had been friends since second grade, and now as we prepared for our board exams together, she was like my sister. But she was the trouble maker whom my parents disliked a lot.

Last night Kathy called me up and said her parents had found out about she being a part of a band. Kathy loved to play the guitar, and I liked to watch her play because she burned all her negative energy while doing that. Kathy's parents are accomplished doctors and want her to only pursue medicine as a career. Kathy on the other hand barely manages to score average in PCMB. She loves studying languages and art. So when her parents got her into the best coaching institute in the city for board preparations, Kathy managed to attend those classes barely for a semester. Her love for the band drove her to steal some money from her parents closet and bribe a poor student at the class to be her proxy.

So Kathy told me that someone from the classes had informed her father that she had stopped coming after the first semester, and that is how they found out that she was with her band and not in her class. They had locked her up in the room and threatened to throw away her guitar and cut her expenses if she did'nt mend her ways. It was past midnight when she called me so it was not possible for me to go to her home. But she needed help because being away from the guitar made her sad and angry at the world. I didn't want her to hurt herself in misery. So I did what my mother always does when I am sad.

I let her continue talking. I reasoned out with her and made her confess that it was criminal to use a less-privileged student selfishly. I tried telling her that making a career as a musician wouldn't possibly give her the luxuries her parents provided her with. She would have to struggle and live on her own one day. Also, I told her why it was important to go the classes. She was an average student, which meant if he failed her boards, she would have to pull herself through PCMB again. So it was best in her case that she apologized to her parents and promise that shed stop going to the band until the exams got over.

Kathy did apologize to her father. She took the guitar and locked it and promised that she would practise only for an hour a day to relax after the days study routine was complete. Although Kathy didn't score well in PCMB, she topped the state in Languages and Arts. Her extraordinary score in music got her a scholarship from a leading college. Kathy's parents finally understood that the scalpel wouldn't look as good in Kathy's hands as a guitar. They accepted her as she was. Kathy is now a researcher who is studying how music can help autistic children cope with their illness. Looks like she met her parents halfway.

f : ℝ → ℝ with f(x) \(=\frac{x^2-16}{x-4}=\frac{(x-4)(x+4)}{x-4}\) = x+4

(i) ∴ Domain of function f(x) is ℝ-{4}

(ii) \(\underset{x\rightarrow4}{lim}\)f(x) \(=\underset{x\rightarrow4}{lim}\)(x+4) = 4+4 = 8

(iii) f(x) is continuous at x = 4 provided f(4) = 8.

Calamity is the touchstone of a brave mind. Temporal happiness is for weak and vulger minds; but the subduing of public terrors is a work that is reserved for more generous spirits. Calamity is the touchstone of a brave mind, that resolves to live and die free, and master of itself.

It was the day for my mathematics' final exam .

I was very upset as I was a bit late . I missed the school bus . And it was raining too . This added to my worries .

I was getting afraid too because it was Mathematics exam as well as it was appearing like an impossible condition to reach at school at that point of time .

I was alone on the bus stand . No one except a small puppy was there with me . Suddenly my mind went to the puppy . It was trying to cross the road but as it was winter and raining too , so he dared to go outside the roof .

But it was trying again and again. I was completely shocked at that time when it takes a very long breath and jumped to the another side of the road in just one jump .

It gave me a lot of courage . Then at that time I tried to go outside that roof and I didn't care about my uniform. Then after going a few metres away I found one of my neighbor there , he works there .

I requested him to let me make a call from his Mobile .

He allowed me to make a call to my father .

Then I made a call to him . He came after 5 minutes , till then I was there with that Uncle .

Then my father dropped me to school .

I was afraid at that time of my father but he gave sympathy to me and said , " Best of Luck ."

After that time I got my lost power back and I was highly energetic and excited after seeing that most of the students were not present by Time. The exam was postponed to next 3 hours . And suddenly my mumma was screaming , "Get up otherwise you will be late."

And I found that it was just only a dream .

Moral : Never loose confidence .

or

Nothing is impossible .

or

Don't be afraid of anything

Evolution tried to solve this problem in two ways. The simplest is the long and tubular shape of the bowels (approximately eight meters in extension), making possible that numerous small intestine loops fold closely. More efficient solutions are the intestinal villi and the microvilli of the mucosal membrane cells.

The intestinal wall is not smooth. The mucous membrane, together with its submucosa, projects inside the gut lumen like glove fingers forming invaginations and villi that multiply the available surface for absorption. In addition the epithelial cells that cover these villi have themselves numerous hairlike projections called microvilli on the external face (lumen face) of their plasma membrane. The absorptive area of the intestines is thus increased hundreds of times with these solutions.

In the jejunum and ileum there are folds that have the function of increasing the absorption surface too.

The following are enzymes produced by the stomach and their respective function: 

Pepsin is the main gastric enzyme.

Gastric lipase: Gastric lipase is an acidic lipase secreted by the gastric chief cells in the fundic mucosa in the stomach.

The reactions of the extracellular digestion are hydrolysis reactions, i.e., breaking of molecules with the help of water. The enzymes that participate in digestion are hydrolytic enzymes.

The enzyme pancreatic lipase is present in the pancreatic juice. This enzyme breaks triacylglycerol (triglyceride) into fatty acids and glycerol.

Correct option is D) round

Correct option is B) get over

Correct option is B) round to

Correct option is D) come round

Carbohydrate digestion begins with the action of the salivary amylase (ptyalin) in the mouth and it continues in the duodenum by the action of the pancreatic juice. This juice contains the enzyme pancreatic amylase, or amylopsin, that breaks starch (amylum) into maltose (a disaccharide made of two glucose molecules).

Correct option is A) cut across

Correct option is D) for

Correct option is C) up to

Correct option is B) take away

Bacteria that live inside the gut have great importance in digestion. Some polysaccharides like cellulose, hemicellulose and pectin are not digested by the digestive enzymes secreted by the body, instead, they are broken by enzymes released by bacteria of the gastrointestinal tract. The intestinal bacterial flora also make vital substances for the functioning of the bowels facilitating or blocking the absorption of nutrients and stimulating or reducing peristalsis. Some gut bacteria are the main source of vitamin K for the body and so they are essential for the blood clotting process.

In the intestinal flora there are utile but also potentially harmful bacteria. It is estimated that more than 100 trillion bacteria live in a human gut. Some bacteria are useful too because they compete with other species preventing excessive proliferation of these bacteria.

With its corrosive effect, HCl also helps the rupture of the adhesion between food particles, facilitating the digestive process.

Characteristics of Stem:

• Stem is the vertically growing axis of the shoot system. 
• The vertical growth of the stem is maintained by the apical bud.
• Stem is divisible into nodes and internodes.
• Leaves are developed on the stem at nodes.
• Young stems are green and woody stems are brown in color.

There are 6 major salivary glands and they are located one in each parotid gland, two beneath the mandibles (submandibular) and two in the base of the tongue (sublingual). More than 700 other minor salivary glands exist dispersed on the lip mucosa, gingiva, palate and pharynx.

The food ingested by cows and other ruminant animals passes first within two compartments of the digestive tube called the rumen and the reticulum. Within them the food suffers the action of digestive enzymes released by microorganisms that live there in mutualist ecological interaction. In the reticulum the food is divided in some food bolus too. After passing the reticulum the food (cud) is regurgitated to the mouth to be again chewed and swallowed in a process called rumination. The digesting food then enters the omasum where it is mechanically mixed. After that the food goes to the abomasum, the organ where the chemical digestion takes place. After leaving the abomasum (the true stomach) the food bolus gains the intestine.

The saliva pH is approximately 6.8. It is thus a slightly acid pH.

Saliva lubricates the food bolus and initiates the enzymatic extracellular digestion of food. It also works as a buffer for the mouth pH and it has an important role of having IgA antibodies (also present in tears, colostrum, mother’s milk and in the mucosae of the intestine and airways) that protect the organism against pathogens.

From the internal surface to the external surface, the digestive tube wall is made of mucosa (epithelial tissue responsible for the intestinal absorption), submucosa (connective tissue beneath the mucous membrane and where blood and lymphatic vessels and neural fibers are located), muscle layers (smooth muscle tissue, two layers, one interior circular and other exterior longitudinal, structures responsible for the peristaltic movement), serous membrane (associated epithelial and connective tissue forming the external surface of the organ). In the bowels the serous membrane prolongs to form the mesentery, a serosa that encloses blood vessels and supports the bowels within the abdominal cavity

Herbivorous animals eat great amounts of cellulose, a substance not digested by their digestive enzymes. In these animals regions of the digestive tube are colonized by microorganisms that digest cellulose. This mutualist ecological interaction between animals and microorganisms occurs, e.g., in horses, cows, rabbits and in some insects such as termites.

The gastric epithelium is mucus secretory, i.e., it produces mucus. The mucus covers the stomach wall preventing corrosion by the gastric juice.

The salivary hydrolase is known as salivary amylase, or ptyalin. Ptyalin digests carbohydrates breaking starch and glycogen, glucose polymers, into maltose (a glucose disaccharide) and dextrin.

The valve that separates the stomach from the esophagus is the cardia. It has the function of preventing acid gastric content from entering back into the esophagus. Insufficiency of this valve causes gastroesophageal reflux, a disease in which patients complain of bloating and heartburn (retrosternal burning).

Until the exit of the stomach, carbohydrates, in the mouth, and proteins, in the stomach, have already undergone chemical breaking by digestive enzymes. Carbohydrates have suffered action of the salivary amylase (ptyalin) and proteins have suffered action of the enzyme pepsin of the gastric juice. Fats, until reaching the duodenum, do not undergo chemical digestion.