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JEE Main Exam Question Paper
A man grows into a giant such that hislinear dimensions increase by a factorof 9. Assuming that his density remainssame, the stress in the leg will change by afactor of :
(1) 9
(2)1/9
(3) 81
(4)1/81

A time dependent force F=6t acts on aparticle of mass 1 kg. If the particle startsfrom rest, the work done by the forceduring the first 1 sec. will be :
(1) 4.5 J
(2) 22 J
(3) 9 J
(4) 18 J

An observer is moving with half the speedof light towards a stationary microwavesource emitting waves at frequency10 GHz. What is the frequency of themicrowave measured by the observer?(speed of light=3×108 ms?1)
(1) 10.1 GHz
(2) 12.1 GHz
(3) 17.3 GHz
(4) 15.3 GHz

When a current of 5 mA is passed througha galvanometer having a coil of resistance15 ?, it shows full scale deflection. Thevalue of the resistance to be put in serieswith the galvanometer to convert it into avoltmeter of range 0?10 V is :
(1) 1.985×103 ?
(2) 2.045×103 ?
(3) 2.535×103 ?
(4) 4.005×103 ?

In a coil of resistance 100 ?, a current isinduced by changing the magnetic fluxthrough it as shown in the figure. Themagnitude of change in flux through thecoil is :
(1) 200 Wb
(2) 225 Wb
(3) 250 Wb
(4) 275 Wb

A diverging lens with magnitude of focallength 25 cm is placed at a distance of15 cm from a converging lens of magnitudeof focal length 20 cm. A beam of parallellight falls on the diverging lens. The finalimage formed is :
(1) real and at a distance of 40 cm fromconvergent lens.
(2) virtual and at a distance of 40 cmfrom convergent lens.
(3) real and at a distance of 40 cm fromthe divergent lens.
(4) real and at a distance of 6 cm fromthe convergent lens.

JEE Main Exam Question Paper

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