Which of the following wil rotate the plane of polarised light in the polarimeter tube experiment ?

Which of the following wil rotate the plane of polarised light in the polarimeter tube experiment ?
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Which of the following wil rotate the plane of polarised light in the polarimeter tube experiment ?
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An optically active compound (a) must contain atleast four carbons (b) when in solution rotate the plane of polarized light (c) must always contain an asymmetric carbon atom (d) in solution always give a negative reading in polarimeter

Description : An optically active compound (a) must contain atleast four carbons (b) when in solution rotate the plane of polarized light (c) must always contain an asymmetric carbon atom (d) in solution always give a negative reading in polarimeter

Last Answer : when in solution rotate the plane of polarized light

Which of the statements is false regarding chiral compounds? (a) rotate the plane of polarized light (b) have cis and trans isomers (c) exist as enantiomers (d) can be detected with a polarimeter

Description : Which of the statements is false regarding chiral compounds? (a) rotate the plane of polarized light (b) have cis and trans isomers (c) exist as enantiomers (d) can be detected with a polarimeter

Last Answer : have cis and trans isomers

(+) tartaric acid has a specific rotation of +12 unit when measured in 12cm polarimeter tube and 2g/ml concentration at given temperature and light. W

Description : (+) tartaric acid has a specific rotation of +12 unit when measured in 12cm polarimeter tube and 2g/ml concentration at given temperature and light. W

Last Answer : (+) tartaric acid has a specific rotation of +12 unit when measured in 12cm polarimeter tube and 2g/ml concentration ... -6 " unit"` D. `+24 " unit"`

Pick up the correct statement from the following: (A) When the electric field oscillates in the direction of the electric vector, a plane polarised wave is formed (B) When the electric vector is in the plane of incidence, vertical polarisation is formed (C) When the electric vector is at right angles to the plane of incidence, horizontal polarization wave is formed (D) All of these

Description : Pick up the correct statement from the following: (A) When the electric field oscillates in the direction of the electric vector, a plane polarised wave is formed (B) When the electric vector is ... right angles to the plane of incidence, horizontal polarization wave is formed (D) All of these

Last Answer : Answer: Option D

All chiral D-sugars rotate plane-polarized light : (a) clockwise (b) counterclockwise (c) +20.0° (d) in a direction that cannot be predicted but must be determined experimentally

Description : All chiral D-sugars rotate plane-polarized light : (a) clockwise (b) counterclockwise (c) +20.0° (d) in a direction that cannot be predicted but must be determined experimentally

Last Answer : in a direction that cannot be predicted but must be determined experimentally

Which of the following statements is correct concerning a pair of enantiomers? (a) They rotate the plane of polarized light by exactly the same amount and in opposite directions. (b) They rotate the plane of polarized light by differing amounts and in opposite directions. (c) They rotate the plane of polarized light by differing amounts and in the same direction. (d) They have different melting point

Description : Which of the following statements is correct concerning a pair of enantiomers? (a) They rotate the plane of polarized light by exactly the same amount and in opposite directions. (b) They rotate ... polarized light by differing amounts and in the same direction. (d) They have different melting point

Last Answer : They rotate the plane of polarized light by exactly the same amount and in opposite directions.

Which of the following statements is false about enantiomers? (a) rotate plane-polarized light (b) are superimposable mirror images (c) are nonsuperimposable mirror images (d) have the same melting point

Description : Which of the following statements is false about enantiomers? (a) rotate plane-polarized light (b) are superimposable mirror images (c) are nonsuperimposable mirror images (d) have the same melting point

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An emf of the order of mV is generated when two solutions of different hydrogen ion concentration are separated by a thin glass wall". This is the working principle of a (A) pH meter (B) Polarimeter (C) Chromatograph (D) Polarograph

Description : An emf of the order of mV is generated when two solutions of different hydrogen ion concentration are separated by a thin glass wall". This is the working principle of a (A) pH meter (B) Polarimeter (C) Chromatograph (D) Polarograph

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Description : iv) A rectangular coil free to rotate is placed in uniform magnetic field with its plane parallel to the magnetic lines of force. Then the coil willa) rotate to maximize the magnetic flux through ... since the magnetic flux through its plane is zero.d) experience the constant torque equal to NBIA

Last Answer : iv) A rectangular coil free to rotate is placed in uniform magnetic field with its plane parallel ... d) experience the constant torque equal to NBIA

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Description : Which one of the following statements is not correct ? (a) A surveyor's compass has two sight vanes (b) A prismatic compass has an object vane and an eye vane (c) A trough compass ... table (d) In a prismatic compass the graduations on the aluminimum disc rotate and the index remains stationary

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When a uniform magnetic field B is applied to a current carrying coil, the coil will rotate in such a manner that its plane a) becomes parallel to B b) becomes anti-parallel to B c) makes an angle of 600 with B d) becomes perpendicular to B

Description : When a uniform magnetic field B is applied to a current carrying coil, the coil will rotate in such a manner that its plane a) becomes parallel to B b) becomes anti-parallel to B c) makes an angle of 600 with B d) becomes perpendicular to B

Last Answer : d) becomes perpendicular to B

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Description : By adding a pole at the origin of s -plane, the Nyquist plot of a system will rotate by (a) 90° in anti -clockwise direction (b) 90° in clockwise direction (c) 180° in anti -clockwise direction (d) 180° in clockwise direction

Last Answer : By adding a pole at the origin of s -plane, the Nyquist plot of a system will rotate by 90° in clockwise direction

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Description : A flywheel weighs 400 kg and has a radius of gyration of 30 cm about its axis of rotation. It is mounted on a shaft subjected to a moment of 40 kgm. If the flywheel starts from restits speed after 3 seconds wil be a.10.9 rad/sec b.19.0 rad/sec c.51.2 rad/sec d.3.33 rad/sec e.16.35 rad/sec

Last Answer : d. 3.33 rad/sec

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Identify the polarisation of the wave given, Ex = 2 cos wt and Ey = 2 sin wt. The phase difference is +90 0 . a) Left hand circularly polarised b) Right hand circularly polarised c) Left hand elliptically polarised d) Right hand elliptically polarised

Description : Identify the polarisation of the wave given, Ex = 2 cos wt and Ey = 2 sin wt. The phase difference is +90 0 . a) Left hand circularly polarised b) Right hand circularly polarised c) Left hand elliptically polarised d) Right hand elliptically polarised

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Identify the polarisation of the wave given, Ex = 2 cos wt and Ey = sin wt. The phase difference is -90 0 . a) Left hand circularly polarised b) Right hand circularly polarised c) Left hand elliptically polarised d) Right hand elliptically polarised

Description : Identify the polarisation of the wave given, Ex = 2 cos wt and Ey = sin wt. The phase difference is -90 0 . a) Left hand circularly polarised b) Right hand circularly polarised c) Left hand elliptically polarised d) Right hand elliptically polarised

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Identify the polarisation of the wave given, Ex = Exo cos wt and Ey = Eyo sin wt. The phase difference is +90 0 . a) Left hand circularly polarised b) Right hand circularly polarised c) Left hand elliptically polarised d) Right hand elliptically polarised

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A circularly polarised wave transmitted at the Brewster angle will be received as linearly polarised wave. State True/False a) True b) False

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Brewster angle is valid for which type of polarisation? a) Perpendicular b) Parallel c) S polarised d) P polarised

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Description : Which of the following waves cannot be polarised? (1) Radio (2) Ultra violet (3) Infrared (4) Ultrasonic

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A glass tube of smaller diameter is used while performing an experiment for the capillary rise of water because (A) It is easier to see through the glass tube (B) Glass tube is cheaper than a metallic tube (C) It is not possible to conduct this experiment with any other tube (D) All of the above

Description : A glass tube of smaller diameter is used while performing an experiment for the capillary rise of water because (A) It is easier to see through the glass tube (B) Glass tube is cheaper than a metallic ... (C) It is not possible to conduct this experiment with any other tube (D) All of the above

Last Answer : Answer: Option A

A light paddle wheel placed in the path of________will rotate.

Description : A light paddle wheel placed in the path of________will rotate.

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Enantiomers have which of the following characteristics? (a) rotate ordinary light (b) have the same melting point (c) are superimposable mirror images (d) react with optically active molecules at the same rate

Description : Enantiomers have which of the following characteristics? (a) rotate ordinary light (b) have the same melting point (c) are superimposable mirror images (d) react with optically active molecules at the same rate

Last Answer : have the same melting point

While rotating the theodolite in the horizontal plane, the bubble of the bubble tube takes up the same position in its tube, it indicates (A) The rotation axis is vertical (B) The trunnion axis is horizontal (C) The line of collimation is perpendicular to vertical axis (D) None of the above

Description : While rotating the theodolite in the horizontal plane, the bubble of the bubble tube takes up the  same position in its tube, it indicates  (A) The rotation axis is vertical  (B) The trunnion ... (C) The line of collimation is perpendicular to vertical axis  (D) None of the above

Last Answer : (A) The rotation axis is vertical

When a tube of smaller diameter is dipped in water, the water rises in the tube with an upward __________ surface. (A) Concave(B) Convex (C) Plane (D) None of these

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Last Answer : Answer: Option A

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Last Answer : Ans. ((a))

Prove with experiment that light is necessary for photosynthesis?

Description : Prove with experiment that light is necessary for photosynthesis? 

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In Newton’s rings experiment, if monochromatic source of light is replaced by another monochromatic source of higher wavelength. What will be the effect on radius (or diameter)? (a) Radius (or diameter) will decrease (b) Radius (or diameter) will increase (c) There will be no effect (d) Radius (or diameter) will remain constant but there will be more brightness

Description : In Newton's rings experiment, if monochromatic source of light is replaced by another monochromatic source of higher wavelength. What will be the effect on radius (or diameter)? (a) Radius (or ... be no effect (d) Radius (or diameter) will remain constant but there will be more brightness

Last Answer : (b) Radius (or diameter) will increase

In interference experiment, monochromatic light is replaced by white light, we will see (a) Uniform illumination of screen (b) Uniform darkness on the screen (c) Equally spaced dark and white bands (d) Few colored bands and then general illumination

Description : In interference experiment, monochromatic light is replaced by white light, we will see (a) Uniform illumination of screen (b) Uniform darkness on the screen (c) Equally spaced dark and white bands (d) Few colored bands and then general illumination

Last Answer : (d) Few colored bands and then general illumination

In Newton's ring experiment, the diameter of the 15 th ring was found to be 0.590 and that of the 5 th ring was 0.336 cm. If the radius of Plano convex lens is 100 cm, compute the wavelength of light used. A. 5885 A 0 B. 5880 A o C. 5890 A o D.5850 A

Description : In Newton's ring experiment, the diameter of the 15 th ring was found to be 0.590 and that of the 5 th ring was 0.336 cm. If the radius of Plano convex lens is 100 cm, compute the wavelength of light used. A. 5885 A 0 B. 5880 A o C. 5890 A o D.5850 A

Last Answer : B. 5880 A o

Why do clocks rotate in a "Clockwise" direction?

Description : Why do clocks rotate in a "Clockwise" direction?

Last Answer : Because that is the direction that the shadow on sun dials moved, at least on the northern hemisphere. That is my guess.

Besides a circle, is there any other shape that can rotate within a triangle?

Description : Besides a circle, is there any other shape that can rotate within a triangle?

Last Answer : Some sort of hexagonal shape with enough sides would, but aside from that I don’t think so. However some sides would loose contact, so if that is a requirement I would say no, there is nothing aside from a circle.