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22 Views

Question : The diameters of the two circles are 12 cm and 20 cm, respectively and the distance between their centres is 16 cm. Find the number of common tangents to the circles.

Option 1: 2

Option 2: 3

Option 3: 1

Option 4: 4

Team Careers360 17th Jan, 2024

Correct Answer: 3


Solution :
The diameters of the two circles are 12 cm and 20 cm.
The distance between their centres is 16 cm.
According to the diagram,
The two circles are touching each other externally.
So, the number of common tangents will be 3.
Hence, the correct answer

9 Views

Question : How many medals in total did India win at the Summer Olympic Games in 2012?

Option 1: 2

Option 2: 6

Option 3: 3

Option 4: 4

Team Careers360 14th Jan, 2024

Correct Answer: 6


Solution : The correct answer is 6.

India's 2012 Summer Olympics marked a historic achievement, doubling its previous record with a total of six medals, including two silver and four bronze. Notably, the nation's first female athletes to secure Olympic medals in the same Games were

17 Views

Question : Find the value of $\cos 0^{\circ}+\cos 30^{\circ}-\tan 45^{\circ}+\operatorname{cosec} 60^{\circ}+\cot 90^{\circ}$.

Option 1: $\frac{7}{6 \sqrt{3}}$

Option 2: $\frac{\sqrt{3}}{6}$

Option 3: $\frac{7}{6}$

Option 4: $\frac{7}{2 \sqrt{3}}$

Team Careers360 12th Jan, 2024

Correct Answer: $\frac{7}{2 \sqrt{3}}$


Solution : $\cos 0^{\circ}+\cos 30^{\circ}-\tan 45^{\circ}+\operatorname{cosec} 60^{\circ}+\cot 90^{\circ}$
= $1+\frac{\sqrt{3}}{2}-1+\frac{2}{\sqrt{3}}+0$
= $\frac{\sqrt{3}}{2}+\frac{2}{\sqrt{3}}$
= $\frac{3+4}{2\sqrt{3}}$
= $\frac{7}{2 \sqrt{3}}$
Hence, the correct answer is $\frac{7}{2 \sqrt{3}}$.

76 Views

Question : Select the most appropriate option to substitute the underlined segment in the given sentence.

After a prolonged discussion, Gayatri got a permission from her parents to study law.

Option 1: got the permission

Option 2: got proper permission

Option 3: got permission

Option 4: got her permission

Team Careers360 19th Jan, 2024

Correct Answer: got permission


Solution : The correct choice is the third option.

The original sentence contains an unnecessary article "a" before "permission". In English, when referring to the concept of permission, the noun "permission" is typically used without an article, as it is not a countable

22 Views

Question : The SI (International System of Units) unit of length is______.

Option 1: metre

Option 2: centimetre

Option 3: millimetre

Option 4: kilometre

Team Careers360 15th Jan, 2024

Correct Answer: metre


Solution : The correct answer is metre.

The metre is the unit of length in the SI (International System of Units). The most widely used measurement system is the International System of Units (SI), which is the current equivalent of the metric system based on the

11 Views

Question : Heat resistant variety of Glass is ____.

Option 1: Pyrex glass

Option 2: Haed glass

Option 3: Flint glass

Option 4: None of these

Team Careers360 25th Jan, 2024

Correct Answer: Pyrex glass


Solution : The correct answer is Pyrex glass.

Glasses are formed of silica. Although glass do not have any sharp melting point but it melts slowly because of heat. Because of this phenomenon glasses of windows become thick at bottom and thin at upper portion. Pyrex

25 Views

Question : The curved surface area of a cone whose base radius is 7 cm and slant height is 10 cm is:

Option 1: 280 cm2

Option 2: 250 cm2

Option 3: 300 cm2

Option 4: 220 cm2

Team Careers360 14th Jan, 2024

Correct Answer: 220 cm2


Solution : Give: Radius = 7 cm
Slant height = 10 cm
The curved surface area of a cone = $\pi rl$
= $\frac{22}{7}\times7\times10$
= 220 cm2
Hence, the correct answer is 220 cm2.

11 Views

Question : Which of the following Mughal rulers is believed to have ruled under the influence of his father-in-law, Itimad-ud-Daulah?

Option 1: Bahadur Shah II

Option 2: Jahangir

Option 3: Humayun

Option 4: Shah Alam I

Team Careers360 13th Jan, 2024

Correct Answer: Jahangir


Solution : The correct answer is Jahangir.

Ghiyas Beg was a merchant from Iran. He was the father of Nur Jahan. Ghiyas Beg was appointed chief minister, or Wazir, by Jahangir upon his coronation as Mughal emperor. Jahangir gave his father-in-law the title of Itimad-ud-Daulah, or

14 Views

Question : The seventy-third Amendment Act,1992 of the Indian Constitution was passed to

Option 1: strengthen Panchayati Raj 

Option 2: strengthen rural institution

Option 3: strengthen urban institution

Option 4: None of the above

Team Careers360 14th Jan, 2024

Correct Answer: strengthen Panchayati Raj 


Solution : The correct answer is strengthen Panchayati Raj.

The Indian Constitution's Seventy-Third Amendment Act of 1992 was passed to strengthen local self-governance in rural India. It established Panchayati Raj Institutions (PRIs), which include Gram Panchayats, Panchayat Samitis, and Zila Parishads and gave them the

20 Views

Question : In $\Delta \mathrm{ABC}$, a line parallel to side $\mathrm{BC}$ cuts the sides $\mathrm{AB}$ and $\mathrm{AC}$ at points $\mathrm{D}$ and $\mathrm{E}$ respectively and also point $\mathrm{D}$ divides $\mathrm{AB}$ in the ratio of $\mathrm{1 : 4}$. If the area of $\Delta \mathrm{ABC}$ is $200\;\mathrm{cm^2}$, then what is the area (in $\mathrm{cm^2}$) of quadrilateral $\mathrm{DECB}$?

Option 1: 192

Option 2: 50

Option 3: 120

Option 4: 96

Team Careers360 12th Jan, 2024

Correct Answer: 192


Solution :
Given: $\mathrm{AD:DB=1:4}$ and the area of $\Delta \mathrm{ABC}$ is $200\;\mathrm{cm^2}$.
In $\Delta \mathrm{ABC}$,
$\mathrm{DE}\parallel\mathrm{BC}$
So, $\Delta \mathrm{ADE}\sim\Delta \mathrm{ABC}$,
The ratio of the areas of two similar triangles is equal to the square of the ratio of their corresponding sides.
⇒ $\frac{\text{Area of $\Delta \mathrm{ADE}$}}{{\text{Area of

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