मेडिकल प्रवेश (CEE) – Physics, Chemistry, Zoology, Botany, MAT
मेडिकल प्रवेश (CEE) – Physics, Chemistry, Zoology, Botany, MAT
Medical Entrance (CEE) – Physics, Chemistry, Biology & MAT · २,०३९ प्रश्न
२,०३९ प्रश्न उपलब्ध। मोड छान्नुहोस्:
CEE 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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The presence of multiple embryos within a single seed, as observed in Citrus and Mango, is termed:
सही उत्तर: क) A) Polyembryony
Option A (Polyembryony) is correct. It describes the specific phenomenon of having more than one embryo developing from a single seed, a characteristic of Citrus and Mango species. Option B refers to a different, rarer occurrence. C & D relate to other seed development patterns.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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During secondary succession, which of the following ecological stages typically occurs *after* a volcanic eruption clears a barren landscape?
सही उत्तर: घ) D) Shrub stage – shrubs and small woody plants begin to colonize.
Option D is correct because the shrub stage represents a progression after initial colonization (lichen) with increased biomass and competition for resources. Lichen represent the first stage, followed by herbaceous then forest stages. Options A & B describe primary succession.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Which of the following statements is correct regarding a simple harmonic oscillator? (a) Its potential energy remains constant throughout its motion. (b) Its kinetic energy remains constant throughout its motion. (c) The total mechanical energy remains constant. (d) It always requires an external force to oscillate.
सही उत्तर: ग) (c) The total mechanical energy remains constant.
In a simple harmonic oscillator, the restoring force is proportional to the displacement and is directed back towards the equilibrium position. This leads to the conservation of total mechanical energy (potential + kinetic). Option (a) is incorrect because potential energy varies with displacement. Option (b) also incorrect because kinetic energy is not constant. Option (d) is wrong as it oscillates due to its own elasticity.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A sound wave has a frequency of 440 Hz and an intensity of 0.01 W/m². What is the wavelength of the sound wave? (Speed of sound in air ≈ 343 m/s)
सही उत्तर: क) (a) 0.8 m
The relationship between intensity (I), frequency (f), and wavelength (λ) of a wave is given by I = (1/2) * p * f * λ, where p is the pressure. We can rearrange this to find the wavelength: λ = 2I / (p * f). Since we are not given the pressure, we should directly calculate wavelength from basic formula λ = c/f. With given frequency f=440 Hz and speed of sound in air c =343 m/s ; then lambda=343/440 = 0.78m nearly equal to 0.8m.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A uniform magnetic field of 0.4 Tesla is applied perpendicular to the plane of a circular coil of radius 5 cm and containing 100 turns. What is the induced emf in the coil if the magnetic field is changing at a rate of 0.2 T/s?
सही उत्तर: ख) (b) 20 V
The induced emf in a coil due to a changing magnetic field is given by Faraday's Law: ε = -N (dΦ/dt), where N is the number of turns and dΦ/dt is the rate of change of flux. Here, N=100, Φ = B * A = 0.4 T * 0.05 m² = 0.02 Wb, and dΦ/dt = 0.2 T/s. Therefore, ε = -100 * 0.2 = 20 V.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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If a watch gains 15 seconds per day, how much will it gain in one year?
सही उत्तर: ख) 1825 seconds
One year has 365 days. The watch gains 15 seconds per day, so in 365 days it will gain 15 * 365 = 5475 seconds. The most tempting answer is 365 seconds which significantly understates the gain because of a simple misinterpretation of the timing involved.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A train travels at 60 kmph for 4 hours and then at 80 kmph for 2 hours. What is the average speed of the train?
सही उत्तर: ग) 73 kmph
The distance traveled in the first part is 60 * 4 = 240 km. The distance traveled in the second part is 80 * 2 = 160 km. The total distance is 240 + 160 = 400 km. The total time is 4 + 2 = 6 hours. The average speed is 400 / 6 = 66.67 kmph. While 72kmph may seem plausible it has a significant error in the calculation. The correct approach should be used.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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If APPLE is coded as GMBBH, then BANANA is coded as?
सही उत्तर: क) LMLMLH
This problem involves a simple letter substitution cipher. Each letter in the original word is replaced by another letter according to a specific pattern. A->G, P->M, L->B, E->H, B->B, N->L, A->M, N->M, A->L. Therefore, BANANA is coded as LMLMLH.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A man walks 15 meters East, then turns left and walks 20 meters. He then turns right and walks 10 meters. How far is he from his starting point?
सही उत्तर: ख) 45 meters
The man first moves 15 meters East, then 20 meters North (turning left), and finally 10 meters West (turning right). The net displacement is 15 - 10 = 5 meters East and 20 meters North. Using the Pythagorean theorem, the distance from the starting point is √(5² + 20²) = √425 ≈ 20.6m. The most plausible incorrect answer is 35 meters as it doesn't reflect the calculated vector sum.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A stone is dropped into a well 45 m deep. If the speed of sound in air is 340 m/s, the time taken for the splash to be heard will be closest to: (a) 2.5 s (b) 3.0 s (c) 3.8 s (d) 4.5 s
सही उत्तर: ख) (b) 3.0 s
The time taken for the splash is determined by calculating the time it takes for the sound to travel up the well after the stone hits the water. This involves using the formula: time = distance/speed, where the distance is 45m and the speed is 340 m/s. (b) 3.0 s is the closest answer. Option (a) is too short, (c) is excessively long, and (d) is significantly longer than needed.
💬 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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