NCERT Class X Science Class: Chapter –10. Light – Reflection and Refraction – Part-3

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Question 11:

A full length image of a distant tall building can definitely be seen by using

(a) A concave mirror

(b) A convex mirror

(c) A plane mirror

(d) Both concave as well as plane mirror

Answer: B

Imagee full length image

Imagee Full Length Image

Imagee full length image

Question 12:

In torches, search lights and headlights of vehicles the bulb is placed

(a) Between the pole and the focus of the reflector

(b) Very near to the focus of the reflector

(c) Between the focus and center of curvature of the reflector

(d) At the center of curvature of the reflector

Answer: B

Image ray diagram of a flashlight

Image Ray Diagram of a Flashlight

Image ray diagram of a flashlight

Question 13:

The laws of reflection hold good for

(a) Plane mirror only

(b) Concave mirror only

(c) Convex mirror only

(d) All mirrors irrespective of their shape

Answer: D

Image the laws of reflection

Image the Laws of Reflection

Image the laws of reflection

Question 14:

The path of a ray of light coming from air passing through a rectangular glass slab traced by four students are shown as A, B, C and D in Figure. Which one of them is correct?

(a) A

(b) B

(c) C

(d) D

Image path of a ray of light

Image Path of a Ray of Light

Image path of a ray of light

Answer: B

Image light A

Image Light A

Image light A

Question 15:

You are given water, mustard oil, glycerin and kerosene. In which of these media a ray of light incident obliquely at same angle would bend the most?

(a) Kerosene

(b) Water

(c) Mustard oil

(d) Glycerin

Answer: D

Image Glycerin media a

Image Glycerin Media A

Image Glycerin media a