ICSE Worksheet for chapter-6 Machines class 10

Worksheet For class 10

This page is prepared by the Academic team of Physics Wallah which consists of ICSE Board Worksheet for Class 10 Physics. Students of Class 10 Physics can get a free Worksheet for Class 10 Physics in PDF format prepared as per the newest syllabus and examination pattern in your schools.

Standard 10 students can practice questions and answers which are given here for Physics in Grade 10 that will help them to improve their knowledge of all important chapters and their topics. Students can also download free pdf of Class 10 Physics Notes prepared by teachers and solve important problems provided here with solutions on daily basis to get more scores in school exams and tests.

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Summary

• Refraction of light, Laws of refraction, Speed of light in different medium, Principle of reversibility of light
• Refraction of light through a glass block & a triangular prism, Applications of real depth and apparent depth
• Critical Angle, Total Internal Reflection, Total Internal Reflection in a prism

Section 1 - Objective

Q1. Light has _ _ _ _ _ _ nature

1. Dual
2. Single
3. Both A & B
4. NOT

Q2. An object in a denser medium when viewed from a rarer medium appears to be raised. The shift is maximum for

1. Red light
2. Violet light
3. Yellow light
4. Green light

Q3. When a ray of light enters a transparent medium it undergoes change in

1. Frequency only
2. Wavelength only
3. Wavelength and velocity both
4. Velocity and frequency both

Q4. The speed of light in water is (µ_w=1.33)?

1. 2 x 10⁸ m/s
2. 2.25 x 10⁸ m/s
3. 3 x 10⁸ m/s
4. 2000 m/s

Q5. A ray of light is incident normally on a rectangular piece of glass. The value of angle of refraction will be

1. 180⁰
2. 90⁰
3. 45⁰
4. 0⁰

Q6. According to the principal of reversibility of light, the path of light is

1. Reversible
2. Irreversible
3. Straight
4. NOT

Q7. The lateral displacement depends on

1. Thickness of glass slab
2. Angle of incidence
3. Refractive index of glass
4. All of these

Q8. The refractive index of glass is 1.5. What is the critical angle for glass air interface? (sin 42⁰ = 2/3)

1. 24⁰
2. 42⁰
3. 37.5⁰
4. 21⁰

Q9. A total reflecting right angled isosceles prism can be used to deviate a ray of light through:

1. 30⁰
2. 60⁰
3. 75⁰
4. 90⁰

Q10. The velocity of light in diamond is 121,000km/s, what is its refractive index?

1. 1.33
2. 1.5
3. 2.48
4. 3.6

Section 2 - Subjective

• Q1. Define refraction. State the laws of refraction.
• Q2. i) With the help of a well-labelled diagram show that the apparent depth of an object such as a coin in water is less than its real depth.
• ii) How is the refractive index of water related to the real depth and the apparent depth of a column of water?
• Q3. State the factors affecting the refractive index of a medium.
• Q4. Draw a diagram showing refraction of light through glass slab.
• Q5. Derive the relation for angle of deviation produced by a triangular prism. State the factors affecting it.
• Q6. State any 2 differences between the reflection of light from a plane mirror and total internal reflection of light from a prism.
• Q7. Explain briefly what causes the twinkling of stars at night.
• Q8. With respect to air, the refractive index of water and benzene are 1.33 and 1.50 respectively. Calculate & the refractive index of benzene with respect to water.

Solutions: to worksheet-6 Topic-Machines

Objective P​roblems:

1. (A)

2. (B)

3. (C)

4. (B)

5. (D)

6. (A)

7. (D)

8. (B)

9. (D)

10. (C)

 

Subjective Problems:

(8) 1.12