CBSE Worksheet for chapter-7 Light class 10

Worksheet For class 10

This page is prepared by the Academic team of Physics Wallah which consists of CBSE 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

Light – Nature, Sources of light, Medium of light, Behaviour of light at the surface of two media

Reflection of light, Mirror, Image and its types

Section 1 - Objective

Q1. A thin layer of water is transparent but a very thick layer of water is :

1. Translucent
2. Opaque
3. Most transparent
4. None of these

Q2. According to law of reflection of light :

1. Angle of incidence is equal to the angle of reflection
2. Angle of incidence is less than the angle of reflection
3. Angle of incidence is greater than the angle of reflection
4. None of these

Q3. A ray of light is incident on a plane mirror at an angle θ with the surface of the mina. If the angle between the incident and reflected rays is 80°, what is the value of θ :

1. 40°
2. 50°
3. 45°
4. 55°

Q4. 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

Q5. The focal length of a concave mirror is f and the distance of the object from the principal focus is ‘a’. The magnitude of magnification obtained will be :

1. (f+a)/f
2. f/a
3. √f/√a
4. f ²/a²

Q6. The magnification of an object placed 10cm from a convex mirror of radius of curvature 20 cm will be :

1. 0.2
2. 0.5
3. 1
4. Infinity

Q7. The magnification produced by a concave mirror :

1. Is always more than one
2. Is always less than one
3. Is always equal to one
4. May be less than or greater than one

Q8. Choose the correct relation between u, v and R :

1. R = 2uv/(u+v)
2. R = 2/(u+v)
3. R = 2(u+v)/uv
4. None of these

Q9. The image formed by a concave mirror is real, inverted and of the same size as that of the object. The position of the object should be :

1. Beyond C
2. Between C and F
3. At C
4. At F

Q10. A boy is standing in front of a plane mirror at a distance of 3 m from it. What is the distance between the boy and his image?

1. 3 m
2. 4.5 m
3. 6 m
4. None of these

Section 2 - Subjective

Q1. State the laws of reflection?

Q2. Define:

1. Pole
2. Aperture
3. Focal length
4. Mirror

Q3. Distinguish between Real image and virtual image

Q4. Write any three uses of concave mirror and convex mirror?

Q5. What is the difference between the magnification of virtual image produced by the concave, plane and convex mirror?

Q6. A concave mirror produces three times magnified real image of an object placed at 10cm in front of it.

Q7. Where is the image located?

Q8. If a plane mirror mover away from the object with a velocity ‘V’ then the image mover away from the object with what velocity?

Q9. how is it to get an enlarged victuals image for concave mirror? Cohere?

Q10. How many images are formed for two plane mirror will angle ‘90^o’ between them?

Q11. In a concave mirror show that where R=R/2 radius of always f= focal legal.

Solutions for Section 1 & 2

Objective Problems:

Subjective Problems:

Ans 6​. – 30 cm on the some side as the object.