UK2015

If r be the distance of a point on the axis of a magnetic dipole from its centre

If r be the distance of a point on the axis of a magnetic dipole from its centre then the…

A proton is projected with a speed of 3×10⁶ m/s horizontally from east to west.

A proton is projected with a speed of 3x10⁶ m/s horizontally from east to west. An uniform magnetic field of…

An isolated sphere has a capacitance of 50pF. What would be the radius of the sphere?

An isolated sphere has a capacitance of 50pF. What would be the radius of the sphere? Options (a) 90cm (b)…

Calculate the charge on equivalent capacitance of the conbination shown in figure

Calculate the charge on equivalent capacitance of the conbination shown in figure between the points P and N Options (a)…

In a common emitter transistor amplifier, the voltage gain is

In a common emitter transistor amplifier, the voltage gain is Options (a) αRᴀс/Rᵢn (b) αRᵢn/Rᴀс (c) βRᴀс/Rᵢn (d) βRᵢn/Rᴀс Correct…

When an input signal 1 is applied to a NOT gate, then its output is

When an input signal 1 is applied to a NOT gate, then its output is Options (a) 1 (b) 0…

In a transistor, the value of βis 100, then the value of α will be

In a transistor, the value of β is 100, then the value of α will be Options (a) 0.01 (b)…

The impurity atoms with which pure silicon may be doped to make it a p-type

The impurity atoms with which pure silicon may be doped to make it a p-type semiconductor are those of Options…

A beam of light of wavelength 590 nm is focussed by a converging lens of diameter

A beam of light of wavelength 590 nm is focussed by a converging lens of diameter 10 cm at a…

An object is seen through a simple microscope of focal length 12 cm.

An object is seen through a simple microscope of focal length 12 cm. What will be the angular magnification produced,…