The question asks to identify the physical quantity that represents electric energy consumed in one second. This requires understanding the definitions of fundamental electrical quantities like work, potential energy, power, and current, and their relationship to energy and time.
Correct Option: C) Power
The question asks for the end year of the Centrally Sponsored Scheme 'Pradhan Mantri Poshan Shakti Nirman (PM POSHAN)' which was approved for providing one hot cooked meal in Government and Government-aided Schools, starting from 2021–22. This requires knowledge of the scheme's duration as announced by the Government of India.
C) 2025–26. The PM POSHAN scheme was approved for a period of five years, starting from the financial year 2021–22 and extending up to 2025–26.
A boy goes to school at a speed of 3 km/h. He returns at a speed of 5 km/h. He takes a total of 4 hours for both going to school and returning. The distance (in km) between his home and school is:
This problem involves calculating distance, speed, and time. We are given the speed for going to school and returning, and the total time taken for the round trip. We need to find the distance between home and school. We can use the formula \(\text{Distance} = \text{Speed} \times \text{Time}\) or \(\text{Time} = \frac{\text{Distance}}{\text{Speed}}\).
Let the distance between the boy's home and school be \(D\) km.
When the boy goes to school, his speed is \(S_1 = 3 \text{ km/h}\). The time taken to go to school, \(T_1\), can be expressed as:
\[ T_1 = \frac{D}{S_1} = \frac{D}{3} \text{ hours} \]When the boy returns from school, his speed is \(S_2 = 5 \text{ km/h}\). The time taken to return, \(T_2\), can be expressed as:
\[ T_2 = \frac{D}{S_2} = \frac{D}{5} \text{ hours} \]The total time taken for both going and returning is given as 4 hours. So, we have the equation:
\[ T_1 + T_2 = 4 \]Substitute the expressions for \(T_1\) and \(T_2\) into the total time equation:
\[ \frac{D}{3} + \frac{D}{5} = 4 \]To solve for \(D\), find a common denominator for the fractions, which is 15:
\[ \frac{5D}{15} + \frac{3D}{15} = 4 \]Combine the fractions:
\[ \frac{5D + 3D}{15} = 4 \]\[ \frac{8D}{15} = 4 \]Multiply both sides by 15:
\[ 8D = 4 \times 15 \]\[ 8D = 60 \]Divide by 8 to find \(D\):
\[ D = \frac{60}{8} \]\[ D = \frac{15}{2} \]\[ D = 7.5 \text{ km} \]D) 7.5 km is the correct distance between his home and school.
A homologous series is a series of organic compounds with the same functional group but with successive members differing by a \(-CH_2\) group. We need to identify which property remains constant across such a series.
D) Chemical properties: Members of a homologous series have the same functional group, which dictates their chemical reactivity. Therefore, their chemical properties remain largely similar or the same.
The question asks about the condition under which white silver chloride (AgCl) turns grey. This phenomenon is a classic example of a photodecomposition reaction, where light energy causes a chemical compound to break down.
This reaction is fundamental to black and white photography, where silver halides coated on film are exposed to light to form a latent image, which is then developed.
Correct Option: C) Sunlight is the catalyst for the photodecomposition of silver chloride, causing it to turn grey.
The following pie chart shows the different specialists in ABC hospital during the year 2021–2022. Study the pie-chart and answer the question.
If the total number of all these specialists was 60, then how many ENT specialists were there in the hospital?
To find the number of ENT specialists in the hospital, we need to use the pie chart data which shows the angle representing ENT specialists and the total number of specialists.
Correct Option: A) 7
If m, v and u, respectively, represent magnification, image distance and object distance, then the correct relation between m, v and u for a lens will be:
m=\( \frac{u}{v} \)
m=u+v
m=\( \frac{v}{u} \)
m=v×u
The question asks for the correct relationship between magnification (m), image distance (v), and object distance (u) for a lens. We need to recall the standard formula for linear magnification in optics.
And in terms of distances:
\[ m = \frac{\text{Image Distance}}{\text{Object Distance}} = \frac{v}{u} \]It's important to note that for lenses, a negative sign is often included in front of \(v/u\) (i.e., \(m = -v/u\)) to indicate the orientation of the image (inverted or erect). However, when the question asks for the relation in terms of magnitude or a general form without specifying orientation, \(m = v/u\) is often presented as the basic ratio of distances. In multiple-choice questions, if \(-v/u\) is not an option, \(v/u\) is the intended answer for the magnitude of magnification.
C) m=\( \frac{v}{u} \) is the correct relation for the linear magnification of a lens in terms of image distance (v) and object distance (u).
The question asks about the specific Ministry responsible for creating the 'Women Safety Division' to comprehensively address women's safety issues. This requires knowledge of the administrative structure and responsibilities of various Indian government ministries.
Correct Option: B) Ministry of Home Affairs
The Ministry of Home Affairs (MHA) created the 'Women Safety Division' in 2018. This division was established to strengthen measures for the safety and security of women, including policy formulation, coordination with states, and implementation of various schemes and initiatives related to preventing crimes against women and ensuring their safety. This aligns perfectly with the MHA's broader mandate of maintaining law and order and internal security.
This is a circular arrangement puzzle. We need to place six persons around a circular table based on the given clues, keeping in mind they are all facing the center. We will build the arrangement step-by-step.
Correct Option: D) Ladoo
The question asks about the state that secured the first rank in Category I of the e-Panchayat Puraskar 2021. This is a factual question related to government awards and schemes, which requires knowledge of current affairs or specific reports from the Ministry of Panchayati Raj.
A) Uttar Pradesh was indeed ranked first in Category I of the e-Panchayat Puraskar 2021. The state was awarded for its efforts in leveraging ICT for various services at the Gram Panchayat level.