Ray Optics-Deviation and Dispersion of Light by a Prism (NEET Physics): Questions 10 - 14 of 16

Get 1 year subscription: Access detailed explanations (illustrated with images and videos) to 2099 questions. Access all new questions we will add tracking exam-pattern and syllabus changes. View Sample Explanation or View Features.

Rs. 550.00 or

Question number: 10

» Ray Optics » Deviation and Dispersion of Light by a Prism

Assertion-Reason▾

Assertion (Ꭺ)

A rainbow cannot be seen at noon, when the sun is high in the sky.

Reason (Ꭱ)

A rainbow is formed by dispersion of light.

Choices

Choice (4) Response
a. Both Ꭺ and Ꭱ are false
b. Ꭺ is false but Ꭱ is true
c. Ꭺ is true but Ꭱ is false
d. Both Ꭺ and Ꭱ are true and Ꭱ is the correct explanation of Ꭺ

Question number: 11

» Ray Optics » Deviation and Dispersion of Light by a Prism

MCQ▾

Question

Calculate the dispersive power for crown glass from the (given data: μv=1.5230,μr=1.5145 )

Choices

Choice (4) Response
a.

0.0163

b.

0.0183

c.

0.0112

d.

0.0142

Question number: 12

» Ray Optics » Deviation and Dispersion of Light by a Prism

MCQ▾

Question

A prism having an apex angle 4° and refraction index 1.5 is located in front of a vertical plane mirror as shown in figure. Through what total angle is the ray deviated after reflection from the mirror?

A prism and vertical plan mirror

A Prism and Vertical Plan Mirror

A prism having an apex angle 40 and refractive index 1.5 is located in front of a vertical plan mirror shown in figure.

Choices

Choice (4) Response
a.

176°

b.

c. 178°
d.

Question number: 13

» Ray Optics » Deviation and Dispersion of Light by a Prism

MCQ▾

Question

A glass prism of refractive index 1.5 and angle of prism 6° is put in contact with another prism of refractive index 1.6 when a ray of light is made incident on this combination normally then it emerges out undeviated. The angle of second prism will be

Choices

Choice (4) Response
a.

b.

c.

6 0

d.

Question number: 14

» Ray Optics » Deviation and Dispersion of Light by a Prism

MCQ▾

Question

A ray of light fall normally on a refracting face of a prism of refractive index 1.5. Find the angle of the prism if the ray just fails to emerge from the prism.

Choices

Choice (4) Response
a.

55°

b.

22°

c.

12°

d.

42°

Sign In