With increasing biasing voltage of a photodiode, the photocurrent magnitude :

Two Zener diodes (A and B) having breakdown voltages of 6 V and 4 V respectively, are connected as shown in the circuit below. The output voltage V0 variation with input voltage linearly increasing with time, is given by : (Vinput = 0 V at t = 0) (figures are qualitative)

Identify the correct output signal Y in the given combination of gates (as shown) for the given inputs A and B.

In the following digital circuit, what will be the output at ‘Z’, when the input (A, B) are (1, 0), (0, 0), (1, 1,), (0, 1)

Which of the following gives a reversible operation?

In the figure, potential difference between A and B is :

Boolean relation at the output stage-Y for the following circuit is :

In the given circuit, value of Y is :

The current i in the network is :

Two identical capacitors A and B, charged to the same potential 5V are connected in two different circuits as shown below at time t = 0. If the charge on capacitors A and B at time t = CR is QA and QB respectively, then (Here e is the base of natural logarithm)

A simple pendulum is being used to determine th value of gravitational acceleration g at a certain place. Th length of the pendulum is 25.0 cm and a stop watch with 1s resolution measures the time taken for 40 oscillations to be 50 s. The accuracy in g is :

When a particle of mass m is attached to a vertical spring of spring constant k and released, its motion is described by y(t) = y0 sin2 $$\omega$$t, where 'y' is measured from the lower end of unstretched spring. Then $$\omega$$ is:

A block of mass m attached to a massless spring is performing oscillatory motion of amplitude ‘A’ on a frictionless horizontal plane. If half of the mass of the block breaks off when it is passing through its equilibrium point, the amplitude of oscillation for the remaining system become fA. The value of f is :

A spring mass system (mass m, spring constant k and natural length $$l$$) rest in equilibrium on a horizontal disc. The free end of the spring is fixed at the centre of the disc. If the disc together with spring mass system, rotates about it's axis with an angular velocity $$\omega$$, (k $$\gg m{\omega }^2$$) the relative change in the length of the spring is best given by the option :

The displacement time graph of a particle executing S.H.M is given in figure : (sketch is schematic and not to scale) Which of the following statements is/are true for this motion? (A) The force is zero at t = {{3T} \over 4} (B) The acceleration is maximum at t = T (C) The speed is maximum at t = {{T} \over 4} (D) The P.E. is equal to K.E. of the oscillation at t = {{T} \over 2}

For a plane electromagnetic wave, the magnetic field at a point x and time t is $$\overrightarrow{B}\left(x,t\right)$$ = $$\left[1.2\times {10}^{-7}\sin \left(0.5\times {10}^{3}x+1.5\times {10}^{11}t\right)\hat{k}\right]$$ T The instantaneous electric field $$\overrightarrow{E}$$ corresponding to $$\overrightarrow{B}$$ is : (speed of light c = 3 × 108 ms–1)

The correct match between the entries in column I and column II are : .tg {border-collapse:collapse;border-spacing:0;} .tg td{border-color:black;border-style:solid;border-width:1px;font-family:Arial, sans-serif;font-size:14px; overflow:hidden;padding:10px 5px;word-break:normal;} .tg th{border-color:black;border-style:solid;border-width:1px;font-family:Arial, sans-serif;font-size:14px; font-weight:normal;overflow:hidden;padding:10px 5px;word-break:normal;} .tg .tg-baqh{text-align:center;vertical-align:top} .tg .tg-c3ow{border-color:inherit;text-align:center;vertical-align:top} I II Radiation Wavelength (a) Microwave (i) 100 m (b) Gamma rays (ii) 10–15 m (c) A.M. radio waves (iii) 10–10 m (d) X-rays (iv) 10–3 m

An electron is constrained to move along the y-axis with a speed of 0.1 c (c is the speed of light) in the presence of electromagnetic wave, whose electric field is $$\overrightarrow{E}=30\hat{j}\sin \left(1.5\times {10}^{7}t-5\times {10}^{-2}x\right)$$ V/m. The maximum magnetic force experienced by the electron will be : (given c = 3 $$\times$$ 108 ms–1 and electron charge = 1.6 $$\times$$ 10–19 C)

The electric field of a plane electromagnetic wave is given by $$\overrightarrow{E}=E_0\left(\hat{x}+\hat{y}\right)\sin \left(kz-\omega t\right)$$ Its magnetic field will be given by :

Choose the correct option relating wave lengths of different parts of electromagnetic wave spectrum: