3D – chiral metamaterials exhibit polarization effects such as optical activity but refrain from displaying circular dichroism.

The four types of polarization are Electronic Polarization, Ionic Polarization, Space-charge polarization and ______

A

Magnetic Polarization

B

Electric Polarization

C

Orientational Polarization

D

Potential Polarization

The 2018 Nobel Prize in Physics has been awarded in laser physics for the optical tweezers and their applications to biological systems for the method of generating high-intensity, ultra-short optical pulses. Which of the following verifies the given statement? I: The 2018 Nobel Prize in Physics has been awarded in laser physics for the optical tweezers. II: The 2018 Nobel Prize in Physics has been awarded for applications of the optical tweezers to biological systems. III: The 2018 Nobel Prize in Physics has been awarded for the method of generating high-intensity, ultra-short optical pulses using the optical tweezers.

A

Only I

B

Only II and III

C

Only I and II

D

Only I and III

E

All of these

The following items consist of two statements, one labeled as “Assertion (A)” and the other labeled as the “Reason (R)”. You are to examine the two statements carefully and decide if the Assertion (A) and the Reason (R) are individually true and if so whether the reason is a correct explanation of the assertion. Select your answer to these items using the codes given below and mark your answer accordingly. Assertion (A): Polarization preserving fibers have a special core design that maintains the state of polarization. Reason (R): In polarization preserving fibers, there is a stress applying part, which creates slow and fast axes in the core.

A

Both (A) and (R) are true and (R) is the correct explanation of (A).

B

Both (A) and (R) are true, but (R) is not the correct explanation of (A)

C

(A) is true, but (R) is false.

D

(A) false, but (R) is true.

The transmission mode polarization vector and receiving mode polarization vector of antenna polarization are ___________

A

always equal

B

conjugate to each other

C

negative of conjugate of other

D

inverse of Conjugate of other vector

Optical binding of chiral nanoparticles are independent of the polarization of laser beams.

A

True

B

False

Which of the following technique(s) can be used to study conformational changes in myoglobin?
P. Mass spectrometry
Q. Fluorescence spectroscopy
R. Circular dichroism spectroscopy
S. Light microscopy

A

P only

B

P and S only

C

Q and R only

D

S only

The absolute configurations of two chiral centres in the following molecule are
Basics of Organic Reaction Mechanism mcq question image

A

2(R), 3(S)

B

2(R), 3(R)

C

2(S), 3(S)

D

2(S), 3(R)

The configurations at the three chiral centres in the bicyclodecanol given below, are
Basics of Organic Reaction Mechanism mcq question image

A

1S, 2S, 6R

B

1S, 2S, 6S

C

1R, 2R, 6R

D

1R, 2S, 6R

The digital transmission on implementation of polarization modulation which involves polarization characteristics of the transmitted optical signal is known as _____________

A

Frequency shift keying

B

Amplitude shift keying

C

Phase shift keying

D

Polarization shift keying

The lines corresponding to Zeeman effect exhibit polarization effects.

A

True

B

False

3D – chiral metamaterials exhibit polarization effects such as optical activity but refrain from displaying circular dichroism.

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