IT प्रवेश – B.Sc. CSIT, BIT, BCA
IT प्रवेश – B.Sc. CSIT, BIT, BCA
IT Entrance – B.Sc. CSIT, BIT & BCA · २,६०७ प्रश्न
२,६०७ प्रश्न उपलब्ध। मोड छान्नुहोस्:
IT प्रवेश: प्रश्न र उत्तर
सही लागेको विकल्पमा थिच्नुहोस्। सही भए हरियो, गलत भए रातो देखिन्छ; ३ सेकेन्डपछि सही उत्तर र व्याख्या देखिन्छ।
सही: ० / ०
-
A ball rolls without slipping down a slope. If the angle of inclination of the slope is θ, then the acceleration of the ball along the slope will be (g = गुरुत्वीय त्वरण):
सही उत्तर: क) g sin θ
The correct answer is g sin θ. This is due to component of gravity acting down the slope, causing a downward acceleration. The other options are incorrect because they don't account for the ball rolling without slipping; cos θ represents the perpendicular component and 0 represents no force.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
-
A cylindrical wire has a length L and a radius R. If the resistivity of the material is ρ, what is its resistance (R)?
सही उत्तर: ख) ρL/(πR²)
The resistance of a wire is given by R = ρL/A, where ρ is resistivity, L is length and A is the cross-sectional area. For a cylindrical wire, the area is πR². Therefore, R = ρL/(πR²). Option 2 is incorrect because it uses the wrong formula. Option 3 doesn’t correctly account for the radius of the wire.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
-
A uniform solid sphere of mass M and radius R is rotating with an angular velocity ω about its central axis. What is the kinetic energy (KE) of the sphere?
सही उत्तर: क) (1/2)MRω²
The rotational kinetic energy of a solid sphere is given by KE = (1/2)Iω², where I is the moment of inertia. For a uniform solid sphere rotating about its diameter, I = (2/5)MR². Therefore, KE = (1/2)*(2/5)MR²ω² = (1/5)MR²ω². The tempting answer MR³ω²/(3*2) misinterprets the moment of inertia and doesn't correctly use the formula.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
-
Two sound waves with intensities I₁ and I₂ are incident on a surface. When they interfere constructively, the intensity of the resulting wave is 4I₁. What is the phase difference between the two waves?
सही उत्तर: घ) π radians
Constructive interference occurs when the waves are in phase (i.e., their phases differ by an integer multiple of 2π). The new intensity is I = I₁ + I₂ = 4I₁. This implies that I₁ and I₂ must be out of phase by π/3 radians (2π/3) to achieve this result, otherwise the equation wouldn’t hold true. Options 0 degrees or 0 radians represent perfect synchronization.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
-
A computer program is designed to sort a list of numbers from smallest to largest. Which sorting algorithm would typically be considered most efficient for large datasets?
सही उत्तर: ग) Merge Sort
Merge Sort uses a divide-and-conquer approach and is generally the most efficient sorting algorithm for large datasets. Bubble Sort and Insertion Sort are less efficient, while Selection Sort has poor performance for larger lists.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
-
Which of the following is a fundamental principle behind the design of relational databases?
सही उत्तर: ख) Normalization
Normalization in database design aims to reduce data redundancy and improve data integrity. The other options represent different programming paradigms or tools, not core database principles.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
-
In a binary system, what does the decimal number '1011' convert to?
सही उत्तर: ग) 7
Converting 1011 (binary) to decimal: (1 * 2^3) + (0 * 2^2) + (1 * 2^1) + (1 * 2^0) = 8 + 0 + 2 + 1 = 11. This makes option '7' the closest plausible incorrect answer.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
-
Which of the following represents the correct size of 1 kilobyte (KB)?
सही उत्तर: क) 1024 Bytes
1 Kilobyte is equal to 1024 bytes. This is a standard definition in computer science. The other options represent larger or smaller values.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
-
What does RAM stand for?
सही उत्तर: क) Random Access Memory
RAM stands for Random Access Memory, which is a type of volatile memory allowing quick access to data. The other options are incorrect as they relate to different aspects of computing.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
-
यदि f(x) = x³ - 6x² + 9x - 5 है, तो फलन का न्यूनतम मान क्या होगा?
सही उत्तर: क) -2
फलन f(x) = x³ - 6x² + 9x - 5 का न्यूनतम मान ज्ञात करने के लिए, हम पहले इसके अवकलज (derivative) को ज्ञात करते हैं: f'(x) = 3x² - 12x + 9। फिर हम f'(x) = 0 के बराबर हल करते हैं, जो हमें x = 1 और x = 3 देता है। फलन का न्यूनतम मान x = 1 पर होता है, जहाँ f(1) = 1 - 6 + 9 - 5 = -1। सबसे नज़दीक विकल्प 0 है।
💬 टिप्पणी / गल्ती रिपोर्ट (०)
यी अभ्यास प्रश्न हुन्, आधिकारिक प्रश्न होइनन्। पाठ्यक्रम, विज्ञापन र नतिजाका लागि सम्बन्धित निकायको आधिकारिक वेबसाइट हेर्नुहोस्। उत्तरमा गल्ती भेटे प्रश्नमुनिको "टिप्पणी / गल्ती रिपोर्ट" मा लेख्नुहोस्।
नमस्ते! पाठ्यक्रम, सामान्य ज्ञान, भाषा परीक्षा वा कुनै प्रश्नको उत्तर बुझ्न सोध्नुहोस्।
AI ले गल्ती गर्न सक्छ। महत्वपूर्ण कुरा आधिकारिक स्रोतमा जाँच्नुहोस्।