IIT JEE प्रश्न और उत्तर का अभ्यास करें
8प्र: Two trains are moving in the same direction at 72 kmph and 36 kmph. The faster train crosses a girl sitting at window seat in the slower train in 32 seconds. Find the length of the faster train ? 5678 05b5cc6d8e4d2b4197774e769
5b5cc6d8e4d2b4197774e769- 1170 mfalse
- 2100 mfalse
- 3270 mfalse
- 4320 mtrue
- उत्तर देखेंउत्तर छिपाएं
- Workspace
- SingleChoice
उत्तर : 4. "320 m"
व्याख्या :
Answer: D) 320 m Explanation: Relative speed = (72 - 36) x 5/18 = 2 x 5 = 10 mps.Distance covered in 32 sec = 32 x 10 = 320 m. The length of the faster train = 320 m.
प्र: Microprocessors as switching devices are for which generation computers? 5674 05b5cc645e4d2b4197774bbb4
5b5cc645e4d2b4197774bbb4- 1Fourth generationtrue
- 2Third generationfalse
- 3Second generationfalse
- 4First generationfalse
- उत्तर देखेंउत्तर छिपाएं
- Workspace
- SingleChoice
उत्तर : 1. "Fourth generation"
व्याख्या :
Answer: A) Fourth generation Explanation: Microprocessors are used in the computers of fourth generation computers. Personal microcomputers were possible due to the microprocessors. Microprocessors further revolutionized the development of computers. The first microprocessor called Intel 4004 was developed by American Intel Corporation in 1971.
प्र: Pen is to poet as needle is to 5664 05b5cc6a2e4d2b4197774cb84
5b5cc6a2e4d2b4197774cb84- 1Sewingfalse
- 2Threadfalse
- 3Tailortrue
- 4Buttonfalse
- उत्तर देखेंउत्तर छिपाएं
- Workspace
- SingleChoice
उत्तर : 3. "Tailor"
व्याख्या :
Answer: C) Tailor Explanation: Here Pen is a tool which is used to write and poet uses it. Then, the needle is a tool which is used to stitch and it is used by Tailor. Except tailor, none of the other options is a person to use it. Hence, Pen : Poet :: Needle : Tailor
प्र: 'P' walked 1 km towards south direction and turned 90oACW and walked 2 km. Then he turned his left and walked 1 km and then he turned his right and walked 2 km. After that he turned 90o ACW and walked 3 km. How far is he from the starting point ? 5659 05b5cc6cee4d2b4197774e23c
5b5cc6cee4d2b4197774e23c- 15 kmtrue
- 24 kmfalse
- 32 kmfalse
- 40 kmfalse
- उत्तर देखेंउत्तर छिपाएं
- Workspace
- SingleChoice
उत्तर : 1. "5 km"
व्याख्या :
Answer: A) 5 km Explanation:
प्र: 7 9 19 18 31 29 Find the odd number in the given Number Series? 5656 05b5cc6b9e4d2b4197774d770
5b5cc6b9e4d2b4197774d770- 131false
- 229true
- 318false
- 419false
- उत्तर देखेंउत्तर छिपाएं
- Workspace
- SingleChoice
उत्तर : 2. "29"
व्याख्या :
Answer: B) 29 Explanation: Here the given number series follows a pattern of two alternate series. 1. 7 19 31 ...(Difference of 12) 2. 9 18 27 ...(Difference of 9) Here the odd number is 29 instead of 27 And the next number is 31 + 12 = 43 & 27 + 9 = 36
प्र: Two persons start running simultaneously around a circular track of length 300 m from the same point at speeds of 15 km/hr and 25 km/hr. When will they meet for the first time any where on the track if they are moving in opposite directions ? 5646 05b5cc6e5e4d2b4197774ecf2
5b5cc6e5e4d2b4197774ecf2- 127 sectrue
- 231 secfalse
- 323 secfalse
- 429 secfalse
- उत्तर देखेंउत्तर छिपाएं
- Workspace
- SingleChoice
उत्तर : 1. "27 sec"
व्याख्या :
Answer: A) 27 sec Explanation: Time taken to meet for the first time anywhere on the track = length of the track / relative speed = 300 / (15 + 25)5/18 = 300x 18 / 40 x 5 = 27 seconds.
प्र: Who translated Ramayana into Persian? 5641 05b5cc675e4d2b4197774c139
5b5cc675e4d2b4197774c139- 1Abdul Fazitrue
- 2Badaunifalse
- 3Isar Dasfalse
- 4Abdul Latiffalse
- उत्तर देखेंउत्तर छिपाएं
- Workspace
- SingleChoice
उत्तर : 1. "Abdul Fazi"
व्याख्या :
Answer: A) Abdul Fazi Explanation: In 1574 Akbar started a Maktab Khana or a house of translation works in Fatehpur Sikri. He endorsed the work to a few officials to make translations of the Sanskrit books Rajatarangini, Ramayana and Mahabharata into the Persian language. In that officials, Abdul Fazi translated Ramayana into Persian.
प्र: In a beach, Renu is running with her children and there she met Vishal and Laxmi. Vishal introduces Ravi to those children as " This person is the daughter of your mother's father's mother and is my sister." How is Vishal and Laxmi related to Renu ? 5636 05b5cc6d5e4d2b4197774e615
5b5cc6d5e4d2b4197774e615- 1Brother and Sisterfalse
- 2Uncle and Aunttrue
- 3Father and Motherfalse
- 4Can't determinefalse
- उत्तर देखेंउत्तर छिपाएं
- Workspace
- SingleChoice
उत्तर : 2. "Uncle and Aunt"
व्याख्या :
Answer: B) Uncle and Aunt Explanation: Daughter of your mother's father's mother => Maternal grandmother => Renu's Aunt. Hence, Laxmi is Renu's Aunt and Vishal is Renu's Uncle.

