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  #1  
Old February 1st, 2016, 12:16 PM
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Default KCET Key Answers

Sir I am looking for the Physics answer key for the KCET so can you please provide me the same
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  #2  
Old February 1st, 2016, 12:31 PM
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Default Re: KCET Key Answers

Hey KCET 2016 will be held in the month of May 2016. You will have to wait patiently to know rank and score till the result is announced by KEA.


Physics answer key for the KCET 2015

1. in a Young’s double slit experiment the slit separation

is 0.5 m from the slits. for a monochromatic light of

wavelength 500 nm, the distance of 3rd maxima from

nd minima on the other side is

2

(1) 2.5 mm (2) 2.25mm

(3) 2.75mm (4) 22.5 mm

Ans: (Bonus)

Note: Data Insufficient

2. Calculate the focal length of a reading glass of a

person if his distance of distinct vision is 75 cm.

(1) 37.5 cm (2) 100.4 cm

(3) 25.6 cm (4) 75.2 cm

Ans: (1)

3. A person wants a real image of his own, 3 times

enlarged. Where should he stand infront of a concave

mirror of radius of curvature 30 cm?

(1) 30 cm (2) 20 cm

(3) 10 cm (4) 90 cm

Ans: (2)

$//(1

6. An D -particle of energy 5 MeV is scattered through

180 by gold nucleus. The distance of closest

o

approach is of the order of

(1) 12 10 cm

(3) 10 10 cm

Ans: (1)

7. Find the de-Broglie wavelength of an electron with

kinetic energy of 120 eV.

(1) 102 pm (2) 124 pm

(3) 95 pm (4) 112 pm

Ans: (4)

8. Light of two different frequencies whose photons have

energies 1 eV and 2.5 eV respectively, successively

illuminate a metallic surface whose work function is

0.5 eV. Ratio of maximum speeds of emitted electrons

will be

(1) 1 : 4 (2) 1 : 1

(3) 1 : 5 (4) 1 : 2

(2) 16 10 cm

(4) 14 10 cm





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