Vidaara.orgClass 7 · Mathematics
CodeVID-M7-WS
Light — Reflection and Refraction — Practice Worksheet
Name: ____________________
Roll No.: __________
Date: ____________
General Instructions
- All questions are compulsory.
- Choose the correct option (A, B, C or D) for each question.
- The answer key is at the end — try the paper first!
Section A — Multiple Choice (1 mark each)
25 × 1 = 25 marks
1.
According to the first law of reflection, the angle of incidence is always:
- A.Greater than the angle of reflection
- B.Equal to the angle of reflection
- C.Less than the angle of reflection
- D.Equal to 90°
2.
The line drawn perpendicular to a mirror at the point where a ray strikes is called the:
- A.Incident ray
- B.Reflected ray
- C.Normal
- D.Axis
3.
The image formed by a plane mirror is:
- A.Real and inverted
- B.Virtual and erect
- C.Real and enlarged
- D.Virtual and inverted
4.
The swapping of left and right in a mirror image is called:
- A.Refraction
- B.Dispersion
- C.Lateral inversion
- D.Diffuse reflection
5.
An object 20 cm in front of a plane mirror forms its image at a distance behind the mirror of:
- A.10 cm
- B.20 cm
- C.40 cm
- D.0 cm
6.
A mirror that curves inward like the inside of a spoon is a:
- A.Plane mirror
- B.Concave mirror
- C.Convex mirror
- D.Cylindrical mirror
7.
A convex mirror is used as a vehicle rear-view mirror because it provides a:
- A.Magnified image
- B.Wide field of view
- C.Real image
- D.Inverted image
8.
Parallel rays of light striking a concave mirror are:
- A.Converged to a focus
- B.Diverged outward
- C.Absorbed fully
- D.Passed straight through
9.
The image formed by a convex mirror is always:
- A.Real and enlarged
- B.Virtual, erect, and diminished
- C.Real and inverted
- D.The same size
10.
Which mirror is most suitable for use in a torch or car headlight reflector?
- A.Plane mirror
- B.Convex mirror
- C.Concave mirror
- D.Diffuse mirror
11.
The bending of light as it passes from one transparent medium to another is called:
- A.Reflection
- B.Refraction
- C.Dispersion
- D.Diffusion
12.
Light passing from air into water bends:
- A.Away from the normal
- B.Towards the normal
- C.Along the mirror
- D.At 90° always
13.
A pencil in a glass of water appears bent because of:
- A.Reflection of light
- B.Refraction of light
- C.Absorption of light
- D.Lateral inversion
14.
A pond appears shallower than its real depth due to the effect of:
- A.Apparent depth
- B.Total reflection
- C.Magnification
- D.Echo
15.
A light ray striking a surface exactly along the normal will:
- A.Bend towards the normal
- B.Bend away from the normal
- C.Pass straight through
- D.Be fully reflected
16.
A lens that is thicker in the middle and converges light is a:
- A.Concave lens
- B.Convex lens
- C.Plane lens
- D.Cylindrical mirror
17.
When parallel rays pass through a concave lens, they:
- A.Meet at a focus
- B.Diverge (spread out)
- C.Stop completely
- D.Reflect back
18.
A magnifying glass makes use of a:
- A.Concave lens
- B.Convex lens
- C.Plane mirror
- D.Convex mirror
19.
A concave lens is used to correct the eye defect known as:
- A.Long-sightedness
- B.Short-sightedness
- C.Colour blindness
- D.Cataract
20.
Holding a lens over print makes the letters appear smaller. The lens is:
- A.Convex
- B.Concave
- C.Plane
- D.Bifocal
21.
The splitting of white light into seven colours by a prism is called:
- A.Reflection
- B.Refraction
- C.Dispersion
- D.Diffusion
22.
The correct order of colours in the spectrum is given by the word:
- A.ROYGBIV only
- B.VIBGYOR
- C.RYBGOV
- D.BIVGYOR
23.
In a prism, which colour of light bends the most?
- A.Red
- B.Yellow
- C.Green
- D.Violet
24.
The light-sensitive screen at the back of the eye where the image forms is the:
- A.Cornea
- B.Iris
- C.Retina
- D.Pupil
25.
Moving pictures appear continuous because of a property of the eye called:
- A.Lateral inversion
- B.Persistence of vision
- C.Dispersion
- D.Reflection
Answer Key
Section A — Multiple Choice (1 mark each)
- (B) Equal to the angle of reflection
- (C) Normal
- (B) Virtual and erect
- (C) Lateral inversion
- (B) 20 cm
- (B) Concave mirror
- (B) Wide field of view
- (A) Converged to a focus
- (B) Virtual, erect, and diminished
- (C) Concave mirror
- (B) Refraction
- (B) Towards the normal
- (B) Refraction of light
- (A) Apparent depth
- (C) Pass straight through
- (B) Convex lens
- (B) Diverge (spread out)
- (B) Convex lens
- (B) Short-sightedness
- (B) Concave
- (C) Dispersion
- (B) VIBGYOR
- (D) Violet
- (C) Retina
- (B) Persistence of vision
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