History

Q.

According to Newtons corpuscular theory, the speed of light is

1. lesser in rarer medium

2. same in all the medium

3. lesser in denser medium

4. independent of the medium

Q.

What is Newtons theory of light?

Q.

By Huygen's wave theory of light, we cannot explain the phenomenon of

[CPMT 1989; AFMC 1993, 99; MP PET 1995, 2003;RPMT 2003; BCECE 2003; Pb PMT 2004]

1. Interference

2. Diffraction

3. Photoelectric effect

4. Polarisation

Q.

According to corpuscular theory of light, the different colours of light are due to

1. Different electromagnetic waves

2. Different force of attraction among the corpuscles

3. Different size of the corpuscles

4. None of the above

Q. If a , b and C are the unit vector s along the incident ray , reflected ray and the outward normal to the reflector . Then what is the relations between a , b and c

Q.

Which one of the following properties of light does not support the wave theory of light?

1. Light obeys the laws of reflection and refraction

2. Light waves get polarised

3. Light shows a photoelectric effect

4. Light shows interference

Q. a point source of light at the surface of a sphere causes a parallel beam of light to emerge from the opposite surface of the sphere .Find the refracrive indexof the sphere

Q.

If the critical angle of a crystal is 45⁰, then the polarizing angle is

1. 

2. 

3. 

4. 

Q. ntA plane reflecting surface is placed in x-z plane, such that its reflecting surface is normal to y-axis. A ray of light PO is incident at origin O. Find a unit vector along the reflected ray, if the coordinates of point P aren nt(i) (a, a, 0);. (ii) (a, b, 0);. (iii) (a, b, c)n

Q.

Are all animals equally sensitive to same intensity of light? Explain.

Q. Newton postulated his corpuscular theory of light on the basis of

1. newton's rings
2. rectilinear propagation of light
3. colour through thin films
4. dispersion of white light into colours

Q. 39. Two polaroids are crossed to each other. Now, one of them is rotated through 60^° . The percentageof incident unpolarised light that passes through thesystem will besep451) 30%2) 37.5% 3) 40%4) 6 0%la

Q. Huygens wave theory could not explain

1. reflection of light
2. refraction of light
3. interference of light
4. double refraction

Q.

According to corpuscular theory of light, the different colours of light are due to

1. Different electromagnetic waves

2. Different force of attraction among the corpuscles

3. Different size of the corpuscles

4. None of the above

Q.

Theory proposed by Albert Einstein

Q. Albert Einstein used corpuscular theory to explain :

1. $E=m{c}^2$
2. The photoelectric effect
3. Quantisation of charge
4. magic of light

Q. Sir i have seen the videos but i couldn't understand the concepts.I even tried using the NET but did not get a suitable videp or answer on this topic of "WAVE OPTICS".

So sir can you please explain the important parts of this chapters only the important parts, i shall be grateful to you then.

Q. By corpuscular theory of light, the phenomenon which can be explained is ____________.

1. polarisation
2. refraction
3. diffraction
4. interference

Q. Who amongst the following used corpuscular theory to explain the nature of light?

1. Max Planck
2. Newton
3. Young
4. Einstein

Q. According to corpuscular theory, the velocity of light in the denser medium is greater than that in rarer medium.

1. True
2. False

Q. 7. If a , b and C are the unit vector s along the incident ray , reflected ray and the outward normal to the reflector . Then what is the relations between a , b and c

Q. Assertion :For two source to be coherent phase difference between two waves at all points should be same. Reason: Two different light source are never coherent.

1. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
2. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
3. Assertion is correct but Reason is incorrect
4. Assertion is incorrect but Reason is correct

Q.

I was just thinking about the case,

The whole cenario is in space there was an space craft it is attached to a mirror say 1.5 *10⁸ m below the space craft by many taut rods. Space craft is moving horizontally with high constant velocity. A person in space craft throws a ray of light to the attached mirror, velocity of light is 3*10⁸ m/sec. So time taken by ray of light to come back at initial position is 1sec.

There was another observer w.r.t him ray of light follows a v-shaped path where the edge of v-shaped path is 1.5*10⁸ m below so each part of path must be greater then 1.5*10⁸ m this mean overall distance is increased ! So time taken also increased!

Both person start as well as stop their stop watch simultaneously.

But it read different time period how?

What is happening here?

Q.

According to the classical predictions the photo current should ____________ with increasing intensity of light falling on the plate.

1. Increase

2. Decrease

3. Remain Same

Q.

when a light ray travel from a rarer to denser medium , the light bend toward the normal . How corpuscular theory reveals that speed of light in denser medium is greater than speed of light in rarer medium.

Q. According to Corpuscular theory, the color of the light is given by :

1. mass of the corpuscle
2. frequency of the corpuscle
3. size of the corpuscle
4. speed of the corpuscle

Q. State two drawbacks of newton's corpuscular theory.

Q.

why photoelectric effect cannot be explained on the basis of wave optics?Give reasons

Q. what is wave front and huygens principle?

Q.

what are the usus of electromagnetic radiation?