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
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Small rain drops and mercury droplets are nearly spherical because of:
सही उत्तर: ग) surface tension
Surface tension minimises surface area, and a sphere has the least surface area for a given volume.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The SI unit of the coefficient of viscosity is:
सही उत्तर: ख) Pa s
From F = ηA(dv/dx), η has units N s/m² = Pa s (also called poiseuille).
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The working of a hydraulic lift (or hydraulic brake) is based on:
सही उत्तर: घ) Pascal's law
Pascal's law: pressure applied to an enclosed fluid is transmitted equally in all directions, which allows force multiplication.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A person has a mass of 60 kg. Taking g on the Moon as one-sixth of 9.8 m/s², his weight on the Moon is about:
सही उत्तर: घ) 98 N
W = m(g/6) = 60 × 9.8/6 = 98 N; mass stays 60 kg.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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According to Kepler's first law, the planets move around the Sun in:
सही उत्तर: क) elliptical orbits with the Sun at one focus
Kepler's law of orbits: each planet moves in an ellipse with the Sun at one of its foci.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Particles of mass 2 kg and 3 kg are placed at x = 0 and x = 5 m respectively. The x-coordinate of their centre of mass is:
सही उत्तर: ग) 3 m
x_cm = (2 × 0 + 3 × 5)/(2 + 3) = 15/5 = 3 m.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A 50 kg student runs up a flight of stairs 10 m high in 20 s. The power developed is (g = 10 m/s²):
सही उत्तर: क) 250 W
P = mgh/t = 50 × 10 × 10/20 = 250 W.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A force of 10 N moves a body through 5 m, the force making an angle of 60° with the displacement. The work done is:
सही उत्तर: ग) 25 J
W = Fs cos θ = 10 × 5 × cos 60° = 25 J.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A wheel rotates at 300 revolutions per minute. Its angular velocity is:
सही उत्तर: क) 10π rad/s
ω = 2πn = 2π × (300/60) = 10π rad/s.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A 5 kg block is pulled along a horizontal floor at constant velocity by a horizontal force of 15 N. The coefficient of kinetic friction is (g = 10 m/s²):
सही उत्तर: ख) 0.3
At constant velocity, friction = applied force: μ × 50 = 15, so μ = 0.3.
💬 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।