Question

Question 1.
Which of the following can make a parallel beam of light when light from a point source is incident on it?
(a) Concave mirror as well as convex lens
(b) Convex mirror as well as concave lens
(c) Two plane mirrors placed at 90° to each other
(d) Concave mirror as well as concave lens

Answer
Question 2.
A 10 mm long awl pin is placed vertically in front of a concave mirror. A 5 mm long image of the awl pin is formed at 30 cm in front of the mirror. The focal length of this mirror is
(a) -30 cm
(b) -20 cm
(c) -40cm
(d) -60 cm

Answer
Question 3.
Under which of the following conditions a concave mirror can form an image larger than the actual object?
(a) When the object is kept at a distance equal to its radius of curvature
(b) When object is kept at a distance less than its focal length
(c) When object is placed between the focus and centre of curvature
(d) When object is kept at a distance greater than its radius of curvature

Answer


Question 4.
The diagrams showing the correct path of the ray after passing through the
MCQ Questions for Class 10 Science Chapter 10 Light Reflection and Refraction with Answers 1
(a) II and III only
(b) I and II only
(c) I, II and III
(d) I, II and IV

Answer
Question 5.
A light ray enters from medium A to medium B as shown in figure. The refractive index of medium B relative to A will be
MCQ Questions for Class 10 Science Chapter 10 Light Reflection and Refraction with Answers 2
(a) greater than unity
(b) less than unity
(c) equal to unity
(d) zero

Answer
Question 6.
Beams of light are incident through the holes A and B and emerge out of box through the holes C and D respectively as shown in the figure. Which of the following could be inside the box?
MCQ Questions for Class 10 Science Chapter 10 Light Reflection and Refraction with Answers 3
(a) A rectangular glass slab
(b) A convex lens
(c) A concave lens
(d) A prism

Answer
Question 7.
A beam of light is incident through the holes on side A and emerges out of the holes on the other face of the box as show in the figure. Which of the following could be inside the box?
MCQ Questions for Class 10 Science Chapter 10 Light Reflection and Refraction with Answers 4
(a) Concave lens
(b) Rectangular glass slab
(c) Prism
(d) Convex lens

Answer
Question 8.
Which of the following statements is true?
(a) A convex lens has 4 dioptre power having a focal length 0.25 m
(b) A convex lens has -4 dioptre power having a focal length 0.25 m
(c) A concave lens has 4 dioptre power having a focal length 0.25 m
(d) A concave lens has -4 dioptre power having a focal length 0.25 m.

Answer
Question 9.
Magnification produced by a rear view mirror fitted in vehicles
(a) is less than one
(b) is more than one
(c) is equal to one
(d) can be more than or less than one depending upon the position of the object in front of it.

Answer
Question 10.
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 object?
(a) 15 cm in front of the mirror
(b) 30 cm in front of the mirror
(c) between 15 cm and and 30 cm in front of the mirror
(d) more than 30 cm in front of the mirror​

Answer 1

Answer:

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