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Question : Which experiment was designed to trace the motion of the earth through the 'luminiferous aether', a theoretical substance necessary for the transmission of light?
Option 1: Maxwell and Hertz's experiment
Option 2: Faraday and Henry's experiment
Option 3: Michelson-Morley's experiment
Option 4: Marconi and Thomson's experiment
Correct Answer: Michelson-Morley's experiment
Solution : The correct option is Michelson-Morley's experiment.
The goal of the Michelson-Morley experiment was to determine how quickly the earth moved about the luminiferous aether, which was believed to be a medium that permeated space and carried light waves. Albert Michelson and Edward Morley
Question : Directions: In each of the following question, choose the correct alternative which will improve the part of the sentence given in quotes.
Apple's new "operate" system for phones and tablets, iOS 11, is betting on some much-sought-after updates.
Option 1: 1
Option 2: 2
Option 3: 3
Option 4: 4
Correct Answer: 1
Solution : The correct choice is the first option.
Question : Which one of the following is an ohmic conductor?
Option 1: Germanium
Option 2: silicon
Option 3: carbon
Option 4: silver
Correct Answer: silver
Solution : The correct option is silver.
An ohmic conductor, also known as an ohmic resistor or a linear resistor, is a material that follows Ohm's law. Silver, like copper and gold, is classified as an ohmic conductor due to its consistent resistance irrespective of the applied
Question : Directions: Which two signs and two numbers should be interchanged in the following equation to make it correct? 78 + 456 − 45 × 12 ÷ 4 = 519
Option 1: 12 and 4; − and ×
Option 2: 78 and 456; ÷ and ×
Option 3: 45 and 12; + and ÷
Option 4: 456 and 45; ÷ and −
Correct Answer: 78 and 456; ÷ and ×
Solution : Given: 78 + 456 − 45 × 12 ÷ 4 = 519
Interchange the numbers and signs in the options one by one in the given equation.
First option: 12 and 4; − and × 78 + 456 − 45
Question : Study the given table and answer the question that follows. The table shows the percentage of marks obtained by 7 students in different subjects.
How many students have scored the highest percentage of marks in more than one subject?
Option 1: Four
Option 2: Three
Option 3: Two
Option 4: One
Correct Answer: Two
Solution : From the given table it can be concluded that 2 students scored the highest percentage of score in more than one subject. Diksha: English, Maths, Biology Amit: Physics, IT Hence, the correct answer is two.
Question : A hemispherical dome of a building needs to be painted. If the circumference of the base of the dome is 154 cm, then find the cost of painting it if the cost of painting is INR 4 per 100 cm2. (Use$ ~\pi=\frac{22}{7}$).
Option 1: INR 150.92
Option 2: INR 150.66
Option 3: INR 105.29
Option 4: INR 105.66
Correct Answer: INR 150.92
Solution : Let $R$ be the radius. Circumference of the base of the dome = 154 cm $⇒2\pi R$ = $154$ $⇒R$ = $\frac{154×7}{2×22}$ = $\frac{49}{2}$ cm Surface area of hemispherical dome = $2\pi R^2$ = $2\pi R×R$ = $154×\frac{49}{2}$ = $3773$ cm2 Cost of
Question : Directions: Select the correct option that indicates the arrangement of the given words in the order in which they appear in an English dictionary. 1. Doctor 2. Doctorate 3. Docile 4. Documentary 5. Dock 6. Doctrine
Option 1: 3, 5, 1, 2, 6, 4
Option 2: 3, 5, 1, 6, 2, 4
Option 3: 3, 5, 2, 1, 6, 4
Option 4: 3, 4, 5, 1, 2, 6
Correct Answer: 3, 5, 1, 2, 6, 4
Solution : Given: 1. Doctor 2. Doctorate 3. Docile 4. Documentary 5. Dock 6. Doctrine
Step 1: The first, second, and third letters of each word are the same, so move on to the next letter. Step 2: The fourth letter of
Question : Find the value of $(22)^2-(14)^2-207$:
Option 1: 97
Option 2: 99
Option 3: 81
Option 4: 77
Correct Answer: 81
Solution : $(22)^2-(14)^2-207$ $=(22+14)(22-14)-207$ $=36×8-207$ $=288-207$ $=81$ Hence, the correct answer is 81.
Question : The Shore temple of Mamallapuram was built by:
Option 1: Pallavas
Option 2: Chalukyas
Option 3: Nagas
Option 4: Cholas
Correct Answer: Pallavas
Solution : The correct option is Pallavas.
The Shore Temple of Mamallapuram, also known as the Mamallapuram Shore Temple or the Seven Pagodas, was built by the Pallava dynasty during the reign of Narasimhavarman II (also known as Rajasimha). The temple is in Mamallapuram (known as
Question : Directions: Select the options figure which is embedded in the given figure (rotation is NOT allowed).
Option 1:
Option 2:
Option 3:
Option 4:
Correct Answer:
Solution : Since the rotation is restricted. So, the embedded figure will have the same orientation as the main figure. By comparison of all the option figures, only the third option figure is embedded in the given question figure.
Hence, the third option is correct.
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