F O
F
2F
2F
Principal axis
Object
कृितका
लखनुहोस्
Redraw the given diagram and complete the ray diagram. Write three
natures of the image thus formed and one application of it.
दिइएको किरण रेखाचित्र पूरा गर्नुहोस् । यो कुन प्रकारको लेन्स हो ? यो लेन्सको सामर्थ्य पनि पत्ता
लगाउनुहोस् । यो लेन्सबाट बन्ने आकृतिको कुनै दुईओटा प्रकृतिहरू लेख्नुहोस्।
Complete the given ray diagram. Which type of lens is used in diagram ? Calculate the power of
the lens. Write two nature of image formed.
नारकोळ । उपयक्त किरण
F
Ans: - 50D
-2cm​

Two vectors are shown. which statement best compares the vectors? vector x has greater magnitude than vector y. vector y has greater magnitude than vector x. the vectors have the same displacement. the vectors have the same direction.

The focal length of a relaxed human eye is approximately 1.7 cm. when we focus our eyes on a close up object, we can change the refractive power of the eye by about 16 diopters. (a) does the refractive power of our eyes increase or decrease by 16 diopters when we focus closely? explain. (b) calculate the focal length of the eye when we focus closely.

4r-134a enters the condenser of a residential heat pump at 800 kpa and 50°c at a rate of 0.022 kg/s and leaves at 750 kpa subcooled by 3°c. the refrigerant enters the compressor at 200 kpa superheated by 4°c determine (a) the isentropic efficiency of the compressor, (b) the rate of heat supplied to the heated room, and (c) the cop of the heat pump. also, determine (d) the cop and rate of heat supplied to the heated room if this heat pump operated on the ideal vapor-compression cycle between the pressure limits of 200 and 800 kpa. (0.757, 4.37 kw, 5.12, 6.18, 3.91 kw)