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Correct option is D) In

It was his hunger that prompted the young seagull to fly finally. He was very hungry and the mother would not give him the fish she had brought with her. She wanted him to fly to her to get it.

The real crisis faced by the young bird is his lack of confidence and his fear of going out of the protective shelter of his home.

The mother flew past him, making joyful sounds. His father flew over him, screaming with joy. His two brothers and sister were flying around him, soaring and diving. In this way the family supported him.

The young bird dived at the fish his mother was carrying. When he dived he fell outwards and downwards into space. The wind rushed against his breast feathers and his stomach and wings. He could feel the tips of his wings cutting through the air. He was not falling how. He was soaring. He thus overcame his fear.

Correct option is C) for

It was a great opportunity for me as I got a chance to watch a football match between Mohan Baghan of India and Massay club of Sri Lanka. I had already taken my seat. Both the teams were on the ground. It was a beautiful play ground. There was greenery, around it and different kinds of flowers were blooming. The weather was very charming and a gentle, cold breeze was blowing. I was excited to watch the match. The audience was also excited. They were blowing whistles and shouting slogans. All of us had been waiting for the match to start. The referees were also on the ground. The whistle blew which was a signal to both the teams to line up as the Prime Minister was in the stadium for inauguration. After formal introduction, the match was about to begin. The players of both the teams were in full zeal to show their game. All of a sudden. there was an announcement to be beware of the unknown things and keep them away. There was a secret report of some terrorists who were there. The two captains looked tense. No body knew, what to do. Suddenly, there was a commotion in one of the corners of the stadium. The police was there and they were holding two persons by their collar and took them away. The two terrorists had been arrested. Now, there was another announcement that everything was allright. The warning had been taken back. Now bottle the captains along with the audience were pleased. There was a great thrill in the match. Mohan Baghan won the match by 3 to 1 goals. Everyone was delighted.

1. Biological names are generally in Latin and written in italics. 

2. When handwritten, the words in a biological name are separately underlined. 

3. The first word in a biological name represents the genus and second word represents the species name. 

4. The first name (Genus) starts with capital letter and the second name (species) starts with small letter.

The ratio of the height of an image to the height of an object is called magnification.

Answer: in each of these cases

The man is wearing glasses of positive power (converging lens). Hence, he cannot see nearby objects clearly. In other words, he is farsighted. Since he cannot see beyond 1 m, he is nearsighted. If a person with normal vision wears glasses of focal length +1 m, then the person will not be able to see beyond 1 m.

The number of images changes accordance with the relation between the angle between the mirrors.

1. 3

2. 3

3. 90°

4. Number of images = n = \(\cfrac{360}{\theta}-1\)

f = – 40 cm, u = – 20 cm

f = \(\cfrac{uv}{u+v}\)

– 40 = \(\cfrac{-20}{-20+u}\)

– 40 ( – 20 + v ) = – 20 v

– 20 + v = -20/-40 = v/2

\(\therefore\) - v/2 = -20

Features of image:

At behind the mirror, very large, virtual, direct.

f = – 5 cm, u = – 8 cm

-5 = \(\cfrac{-8v}{-8+v}\)

-5 (-8 +v) = -8v

40-5v = -8v

40 = -3v

\(\therefore\) 3v = -40

v = -40/3 = -13.34 cm

Features of images : Beyond C, big, real, inverted

Magnification m = \(\cfrac{h_i}{h_o} = \cfrac{-v}{u}\)

m = \(\cfrac{-v}{u}\) = (-13.34/-8) = -16.7

Hydrotropism : The response of a plant part to water is called Hydrotropism, If the plant part moves towards water, it is called hydropism.

Experiment procedure :

(i)   Plant a seedling in a vessel containing soil.

(ii)  Adjacent to the seedling put a porous pot containing water.

(iii)  Leave the soil up for few days.

Observation

On examinig the roots of seedling it is observed that the roots bend towards the source of water and do not grow straight.

Results :  Root grows towards water called as hydrotropism.

Yes,  the focal length of \(\cfrac{uv}{u+v}\) the mirror and the average value of obtained from the table the same.

1. Negative.

2. Negative.

3. Positive.

4. Negative.

(2) Posterior pituitary

The dental doctor uses a concave mirror. Effect and enlarged image can be obtained using the mirror. Such images are formed when the object is kept in between the main focus and pole of a concave mirror. So the minimum distance between the mirror and the teeth must be in 8 cm to view the teeth clearly.

The image formed by a convex mirror is always erect and diminished.

The image formed by a convex mirror is always erect and diminished. Hence the driver who sees the image of vehicles on the mirror develops a feeling that the vehicles coming from behind are at a greater distance. This may turn out to be dangerous.

(c) Wall

Virtual library is a library without Wall.

wall is the correct answer.

A Virtual Library is a collection of resources available on one or more computer systems, where a single interface or entry point to the collections is provided.

let the equation of circle be-

Amount spent to purchase 100 shares = 45 × 100 = Rs 4500 

Brokerage = 4500 × 2 / 100 = Rs 90

GST on brokerage = 90 × 18 / 100 =Rs  16.20

∴ Total amount = 4500 + 90 + 16.20 = Rs 4606.20

The arrangement of chairs is 20, 22, 24, 26, ..........

Which is an A. P. 

Here, a = 20, d = 2. We want to find t₂₁ . 

t_n = a + (n-1)d

∴ t₂₁ = 20 + (21-1) × 2

= 20 + 40 

= 60

∴ There are 60 chairs in the 21^st row. 

First term=5
Common difference = second term − first term
=1−5
=−4

Correct answer is (C) 5544 cm²

Correct answer is (C) 8

Let the digit in the tens place of the number be x.
The digit in the units place of the number = 2x

∴ The number = 10(x) + 2x = 12x

Sum of the digits = x + 2x = 3x

Given that the number exceeds the sum of its digit by 18.

⇒ 12x = 3x + 18
⇒  9x = 18
⇒ x = 2

Therefore, the digit in the tens place is 2 and the digit in the units place is (2 x 2) i.e. 4.

So, the number is 24.

Let x, 15 – x be the numbers

\(\frac{1}{x}+\frac{1}{15-x}=\frac{3}{10}\)

\(\frac{15-x+x}{15x-x^2}=\frac{3}{10}\)

150 = 45x - 3x²

3x² - 45x + 150 = 0

x² - 15x + 50 = 0

\(x=\frac{-15\pm \sqrt{225-200}}{2}=\frac{15\,\pm\,5}{2}=10,5\)

Numbers = 10, 5

Correct answer is (B) c = a 

The required numbers are 2 and 4.

HCF of 2 and 4 is 2.

Given that one root of equation 3x² − 10x + k = 0 is reciprocal to other root.

Hence, let the roots are  α and \(\frac{1}{\alpha}.\)

Therefore, product of roots = α . \(\frac{1}{\alpha}=\frac{k}{3}.\)

\(\frac{k}{3}=1 \Rightarrow k = 3.\)

Hence, the value of k is 3.