# Light-Reflection and Refraction class 10 most Important MCQ Question and Answers

#### Light-Reflection and Refraction class 10 most Important MCQ

Question:1 which type of Mirror is used in street light as reflector

1. Concave Mirror
2. Convex Mirror
3. Concave Mirror as well as convex mirror
4. None of the above

Question:2 all incident rays parallel to the principal axis of the convex lens, after refraction

1. Remain undeviated
2. pass through 2F
3. pass through the focus
4. None of the above

Question:3 The velocity of light is minimum in?

1. Diamond
2. water
3. Ruby
4. Ice

Question:4 which Mirror being used as a make-up Mirror ?

1. Concave mirror
2. convex mirror
3. plane mirror
4. all of the above

Question:5 A convex lens is

1. Thick at top side
2. thin in the middle
3. thick in the middle
4. same thickness throughout

Question:6 In magnifying glass, the object is placed ?

1. At 2F
2. Beyond 2F
3. Between F and 2F
4. Between optical centre and the principal focus

Question:7 Assertion concave Mirrors are used in vehicle headlights Reason” A bulb is placed at the focus of a concave mirror,

1. Both A and R are true and R is the correct explanation of A
2. Both A and R are true but R is not the correct explanation of A
3. if A is true but R is false
4. if A is False but R is true

Question:8 Diffraction of light can be explained by considering light as a

1. Wave nature
2. Particle nature
3. both
4. None

Question:9 A child is standing in front of a magic mirror, she finds the Image of her head bigger the middle portion of her body of the same size and that of the legs smaller the following is the order of combinations for the magic mirror from the top?

1. Plane, convex and concave
2. Convex, concave and plane
3. Concave plane and convex
4. Convex, plane and concave

Light-Reflection and Refraction MCQ

Question:10 which type of Mirrors are commonly used in search lights?

1. Plane mirror only
2. concave mirror only ‘
3. convex mirror only
4. all mirrors irrespective of their shapes,

Question:11 which of the following statements is corrects as the object moves from Infinity towards a concave mirrors, the size of Image of the object?

1. Decrease
2. Increase
3. First Increase the size after that decreasing the size of Image
4. No change in the size of Image

Question:12 The magnification (M) produced by a which mirror is more than 1?

1. Concave mirror
2. convex mirror
3. plane mirror
4. all of the above

Question:13 In which of the following lens or mirror can be used to burning of a paper?

1. Concave mirror only
2. convex mirror only
3. convex lens only
4. Concave mirror and convex lens

Question:14 In torches search lights and headlights of vehicles the bulb is placed?

1. between the pole and the focus of the reflector
2. between the focus and centre of curvature of the reflector
3. very near to the focus of the reflector
4. at the centre of curvature of the reflector

Question:15 A full length Image of a distant tall building can be seen by using ?

1. Concave mirror
2. convex mirror
3. plane mirror
4. both concave mirror as well as plane mirror

Question:16 Rays from sun converge at a point 15 cm in front of a concave mirror where should an object be placed so that size of its image is equal to the size of the objects?

1. 30 cm in front of the mirror
2. 15 cm in front of the mirror
3. between 15 cm and 30 cm in front of the mirror
4. more than 30 cm in front of the mirror

Question:17 which of the following phenomena does not explained by wave nature of light?

1. Diffraction of light
2. Interference of light
3. Polarization of light
4. Reflection of light

Question:18 The Images formed on a cinema hall screen in as example of ?

1. Real Image
2. Virtual Image
3. Real Image as well as virtual Image
4. None of the above

Question:19 Ram is observing his Image in a plane mirror the distance between the mirror and his Image is 6 m if he moves 2 m towards the mirror then the distance between Ram and his Image will be

1. 7 m
2. 12 m
3. 8 m
4. 13 m

Light-Reflection and Refraction MCQ

Question:20 In burning glass if the position of object at Infinity then what will be the position of Image?

1. Beyond 2F
2. At 2F
3. At Infinity
4. at the principal focus