An object is placed at different distances, u, from a con...
An object is placed at different distances, u, from a converging lens of focal length, 15.0cm. For what value of u does the lens act as a microscope?
u = 15cm only
u = 30cm only
M < 15cm only
u > 30cm only
Correct answer is D
Objects at a distance greater than two times of the focal length produces a real image, inverted and diminished in size.
→ 2 * 15 = 30cm
: At >30cm this is applicable
In the wave equation y = Eo, sin(299t - π), Eo represents the...
The critical angle for light traveling from a transparent medium to air s measured as 34º. The ...
The tyre pressure of a car was found to be 150cmHg in the morning at a temperature of 27°C. Hard...
A parallel plate capacitor of area 10cm2 in vacuum has a capacitance of 10-2μF. What is the di...
The diagram above represents a transverse travelling wave. Which two points are 180° out of phas...
The inner diameter of a test tube can be measured accurately using a? ...
Transverse waves can be distinguished from longitudinal waves using the characteristic of ...