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Area of the circle = πr2 616 = 22/7 × r2 r2 = 196 r = 14 cm (Since, radius cannot be negative) Radius of the circle = 14 cm Diameter of the circle = 2r = 28 cm Length of the rectangle = (28/7) × 14 = 56 cm Breadth of the rectangle = (28/7) × 5 = 20 cm Perimeter of the rectangle = 2 × (56 + 20) = 152 cm Circumference of the circle = 2 × (22/7) × 28 = 88 cm Required difference = 152 – 88 = 64 cm
Which of the following optical phenomena CANNOT convert unpolarised light to plane polarised light?
If the specific heat at constant pressure Cₚ is greater than Cᵥ , the difference Cₚ -Cᵥ is equal to:
In Young’s double-slit experiment, if the distance between slits is increased, fringe width:
The intensity of any wave is proportional to which quantity?
Electromagnetic waves travelling in a medium having relative permeability μr = 1.2 and relative permittivity Er = 0.012. The speed of electromagnetic w...
In half-wave rectifier, what is the output frequency if the input frequency is 40 Hz. What is the output frequency of a full-wave rectifier for the same...
In a concave mirror which of the following pair of position of object – size of the image is correct?
I. At infinity – point sized
A 100 μF capacitor is charged to a voltage of 50V. How much energy is stored in the capacitor?
The instrument used to measure the speed of the wind is –
Which instrument is primarily used to measure the relative density of liquids by utilizing the principle of buoyancy?