STREAM 1 - Physics , chemistry, maths

The number of attempts remaining is 1

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Q1. Magnetic moment for solenoid and corresponding bar magnet is

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Q2. In the case of an inductor

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Q3. In a pure capacitive circuit if the frequency of ac source is doubled, then its capacitive reactance will be

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Q4. In an alternating current circuit consisting of elements in series, the current increases on increasing the frequency of supply. Which of the following elements are likely to constitute the circuit?

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Q5. In which of the following circuits the maximum power dissipation is observed?

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Q6. In a series LCR circuit the voltage across an inductor, capacitor and resistor are 20 V, 20 V and 40 V respectively. The phase difference between the applied voltage and the

current in the circuit is

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Q7. At resonant frequency the current amplitude in series LCR circuit is

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Q8. Quality factor and power factor both have the dimensions of

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Q9. For an ideal-step-down transformer, the quantity which is constant for both the coils is

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Q10. A transformer works on the principle of

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1). Which of the following does not belong to the group of Doberiener’s triad?

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2). The attributes of corresponding elements are the periodic functions of the ________

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3). An element’s physical and chemical properties are a periodic function of its mass

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4). Mendeleev’s periodic table’s horizontal rows were called __________

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5). The greatest number in the period correlates to the highest number in the period.

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6) Which of the following elements belongs to the periodic table’s second transition series?

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7). What are the transition elements’ characteristics?

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8). What may a litmus paper be used to test?

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9). What is the first element in the periodic table’s fourth transition series?

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10). The ions O2- , F– , Na+ , and Mg2+ are referred to as __________

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1) If A and B are two matrices of the order 3 × m and 3 × n, respectively, and m = n, then the order of matrix (5A – 2B) is

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2) For any two matrices A and B, we have

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3) If A and B are symmetric matrices of the same order, then (AB′ –BA′) is a

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4) If A is a skew-symmetric matrix, then A2 is a

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5) sin(tan-1 x), where |x| < 1, is equal to:

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6)The value of sin (2 tan–1 (.75)) is equal to

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7) If α ≤ 2 sin–1x + cos–1x ≤ β, then

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8)0∫2 x2 dx =

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9) If ∫ 2x dx = f(x) + C, then f(x) is

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10) ∫cot2x dx equals to