### NEET Physics - New - Optics

#### Question - 1

The bending of beam of light around corners of obstacles is called:

• A Reflectio
• B Diffraction
• C Refraction
• D Interference

#### Question - 2

The penetration of light into the region of geometrical shadow is call :

• A Polarization
• B Interference
• C Diffraction
• D Refraction

#### Question - 3

Red light is generally used to observe diffraction pattern from single slit. If blue light is used instead of red light, then diffraction pattern :

• A Willbe clearer
• B Will contract
• C Will expanded
• D Will not be visualiaes

#### Question - 4

Diffraction and interference of light suggest

• A Nature of light is electro-magnetic
• B Wave nature
• C Nature is quantum
• D Nature of light is transv

#### Question - 5

To observe diffraction the size of an obstacle

• A Should be of the same order as wavelength
• B Should be much larger than the wavelength
• C Have no relation to wave
• D Should be exactly λ/2

#### Question - 6

A polariser is used to

• A Reduce intensity of light
• B Produce polarised light
• C Increase intensity of light
• D Produce unpolarised light

#### Question - 7

Light waves can be polarised as they are

• A Transverse
• B of high frequency
• C Longitudinal
• D Reflected

#### Question - 8

Through which character we can distinguish the light waves from sound waves

• A Interference
• B Refraction
• C Polarisation
• D Reflection

#### Question - 9

A polaroid is placed at 45° to an incoming light of intensity 10. Now the intensity of light passing through polaroid after polarization would be :

• A 10
• B I0/2
• C I04
• D Zero

#### Question - 10

Out of the following statements which is not correct?

• A When unpolarised light passes through a Nic prism, the emergent light is elliptically polarized
• B Nicol's prism works on the principle of double refraction and total internal reflection
• C Nicol's prism can be used to produce and analyze polarized lig
• D Calcite and Quartz are both doubly refracting crystals