इन्जिनियरिङ प्रवेश – Mathematics, Physics, Chemistry, English
इन्जिनियरिङ प्रवेश – Mathematics, Physics, Chemistry, English
Engineering Entrance – Mathematics, Physics, Chemistry & English · ३,८४१ प्रश्न
३,८४१ प्रश्न उपलब्ध। मोड छान्नुहोस्:
इन्जिनियरिङ 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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Fill in the blank: Hardly had he entered the room ___ the phone rang.
सही उत्तर: ग) when
'Hardly' is correctly paired with 'when' (Hardly ... when), while 'No sooner' pairs with 'than'.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Fill in the blank: We ___ for two hours when the bus finally arrived.
सही उत्तर: क) had been waiting
An action continuing up to a point in the past (with a duration) takes the past perfect continuous: 'had been waiting'.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Fill in the blank: She ___ the novel when the lights suddenly went out, so she had to stop.
सही उत्तर: घ) was reading
A longer action in progress in the past that is interrupted by a shorter one takes the past continuous: 'was reading'.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Fill in the blank: Look! The sky ___ dark; it is going to rain.
सही उत्तर: घ) is getting
'Look!' shows an action happening at the moment of speaking, so the present continuous 'is getting' is correct.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Fill in the blank: By next June, she ___ her engineering degree.
सही उत्तर: घ) will have completed
'By next June' points to an action finished before a future time, so the future perfect 'will have completed' is used.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A proton and a deuteron with equal kinetic energies enter a uniform magnetic field perpendicular to it. The ratio of the radii of their circular paths (proton : deuteron) is:
सही उत्तर: ग) 1 : √2
r = mv/(qB) = √(2mK)/(qB); both have charge e and the deuteron has twice the mass, so r_p : r_d = 1 : √2.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Point charges +4 μC and −1 μC are placed 1 m apart. On the line joining them, the electric field is zero at a point:
सही उत्तर: घ) 1 m from the −1 μC charge, on the side away from +4 μC
Between unlike charges the fields add, so the null point is outside, nearer the smaller charge: 4/(x + 1)² = 1/x² gives x = 1 m beyond the −1 μC charge.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Two pipes have the same length: one open at both ends and one closed at one end. The ratio of the frequency of the second harmonic of the open pipe to the fundamental frequency of the closed pipe is:
सही उत्तर: क) 4 : 1
Open pipe: fₙ = nv/(2L), so f₂ = v/L; closed pipe: f₁ = v/(4L). Ratio = (v/L)/(v/4L) = 4.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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An air bubble rising from the bottom of a lake doubles its volume on reaching the surface (temperature constant). If atmospheric pressure equals the pressure of a 10 m column of water, the depth of the lake is:
सही उत्तर: ख) 10 m
Boyle's law: (H + h)V = H(2V) with H = 10 m of water, so H + h = 2H and h = 10 m.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A particle in SHM has speed 4 cm/s at displacement 3 cm and speed 3 cm/s at displacement 4 cm. Its amplitude is:
सही उत्तर: क) 5 cm
v² = ω²(A² − x²): 16 = ω²(A² − 9) and 9 = ω²(A² − 16). Subtracting, 7 = 7ω², so ω = 1 rad/s and A² = 9 + 16 = 25, A = 5 cm.
💬 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।
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