त्रिवि IT प्रवेश BIT र BCA प्रवेश तयारी

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

1. In Young’s double-slit experiment with λ = 600 nm, d = 1 mm and D = 1 m, what is the fringe width (Δy) between successive bright fringes?

   क3 x 10⁻⁶m ख6 x 10⁻⁵m ग1.5 x 10⁻⁴m घ3 x 10⁻⁴m
   💬 टिप्पणी / गल्ती रिपोर्ट (०)

   छलफल / प्रश्न उत्तरमा गल्ती छ

   पठाउनुहोस्

   टिप्पणी जाँचपछि मात्र देखिन्छ।

2. The fundamental frequency of an organ pipe of length L closed at one end is given by f = v/(2L), where 'v' is the speed of sound. What value does ‘v’ represent in this formula?

   कThe amplitude of the sound wave खThe length of the pipe गThe speed of sound through the air column घThe frequency of external vibrations
   💬 टिप्पणी / गल्ती रिपोर्ट (०)

   छलफल / प्रश्न उत्तरमा गल्ती छ

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   टिप्पणी जाँचपछि मात्र देखिन्छ।

3. Lenz's law describes the direction of induced current in a circuit due to a changing magnetic field. This law states that the induced current flows in such a way as to oppose the *change* that produced it. The correct option would be:

   कThe force exerted by the magnetic field on the conductor खThe magnitude of the induced electromotive force (EMF) गThe direction of the induced current’s flow घThe energy loss due to eddy currents
   💬 टिप्पणी / गल्ती रिपोर्ट (०)

   छलफल / प्रश्न उत्तरमा गल्ती छ

   पठाउनुहोस्

   टिप्पणी जाँचपछि मात्र देखिन्छ।

4. If a triangle has sides of length 5, 12 and 13, what is the cosine of the largest angle?

   क1/2 ख1 ग13/13 घ12/13
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5. Find the number of distinct solutions to the equation x⁴ - 5x² + 4 = 0.

   क1 ख2 ग3 घ4
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   पठाउनुहोस्

   टिप्पणी जाँचपछि मात्र देखिन्छ।

6. Which of the following describes the concept of 'bitwise' operations?

   कA. Performing calculations on large numbers directly. खB. Operations performed on individual bits within a data type. गC. Optimizing code for faster execution speed. घD. Implementing complex algorithms with multiple steps.
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   पठाउनुहोस्

   टिप्पणी जाँचपछि मात्र देखिन्छ।

7. In computer networking, what is a subnet mask used for?

   कA. To encrypt network traffic for security. खB. To define the size of an IP address. गC. To divide a network into smaller logical networks. घD. To automatically configure router settings.
   💬 टिप्पणी / गल्ती रिपोर्ट (०)

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   टिप्पणी जाँचपछि मात्र देखिन्छ।

8. Which data structure is best suited for implementing a Last-In, First-Out (LIFO) system?

   कA. Queue. खB. Linked List. गC. Stack. घD. Tree.
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   टिप्पणी जाँचपछि मात्र देखिन्छ।

9. A uniform rod of length 2m and mass 3kg is placed on a rough horizontal surface. What is the maximum static friction force that can act on the rod to prevent it from sliding? (Coefficient of static friction = 0.4)

   क6N ख8N ग12N घ24N
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10. A ball of mass 0.2 kg is thrown upwards with an initial velocity of 15 m/s. Ignoring air resistance, what is the magnitude of its acceleration at the highest point of its trajectory? (Take g = 9.8 m/s²)

    क9.8 m/s² ख15 m/s² ग24.5 m/s² घ0 m/s²
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    छलफल / प्रश्न उत्तरमा गल्ती छ

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    टिप्पणी जाँचपछि मात्र देखिन्छ।