Medical Entrance ( CBSE , State Medical ) Test

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1.According to classical theory , the Rutherford model of atom is

a)stable
b)unstable
c)semi stable
d)meta stable

2.The ratio of angular momentum of the orbital electron in the first orbit to that in the second orbit is

a)2
b)1
c)0.5.
d)4

3.Which of the following is the property of Rydberg constant ?

a)it is universal constant
b)it is same for all the hydrogen like atoms
c)it depends on atomic number of the atom
d)it depends on the mass number of the atom

4)What is the average binding energy per nucleon of a nucleus ?

a)8 eV
b)8 keV
c)8 MeV
d)8 BeV

5)If  critical angle for a material to air is 30° , then refractive index of the material will be

a)1
b)1.5
c)2
d)2.5

6)Near and far points of a healthy human eye respectively are

a)0 and 25 cm
b)0 and infinity
c)25 cm and 100 cm
d)25 cm and infinity

7)Two lens of power 2.5 D and 1.5 D are joined together . The power of the new lens formed is

a)1 D
b)5 / 3 D
c)3 / 5 D
d)4 D

8)Light intensity depends on

a)amplitude
b)frequency
c)time period
d)none of the above

9)What is the minimum height of a plane mirror held vertically in front of a man of 6 ft tall to see his entire image ?

a)3 ft
b)2 ft
c)6 ft
d)4 ft

10)Diamond shines due to

a)Reflection
b)Refraction
c)Total internal reflection
d)None of these

11)Rainbow is formed due to a combination of

a)refraction and absorption
b)dispersion and total internal reflection
c)dispersion and focussing
d)refraction and scattering

12)That light is an electro magnetic wave was first shown by

a)Box
b)Marconi
c)Maxwell
d)Hertz

13)After a shower of rain , a rainbow is seen

a)towards the sun
b)opposite to the sun
c)any where in the sky
d)even in absence of sun

14)In an astronomical telescope , the image formed is

a)erect and virtual
b)inverted and virtual
c)real and erect
d)real and virtual

15)The penetration of light into the region of geometrical shadow is called

a)polarisation
b)interference
c)diffraction
d)refraction