EASY
10th CBSE
IMPORTANT
Earn 100

By drawing a neat diagram show why does a coin placed in a water tank appear raised?

Important Questions on Light - Reflection and Refraction

EASY
10th CBSE
IMPORTANT
Core Science Physics>Chapter 1 - Light - Reflection and Refraction>EXERCISE - 1C>Q 3
Under what condition in an arrangement of two plane mirrors, incident ray and reflected ray will always be parallel to each other, whatever may be the angle of incidence. Show the same with the help of a diagram.  
EASY
10th CBSE
IMPORTANT
Core Science Physics>Chapter 1 - Light - Reflection and Refraction>EXERCISE - 1C>Q 4
Draw a ray diagram showing the path of rays of light when it enters with oblique incidence from air into water.
EASY
10th CBSE
IMPORTANT
Core Science Physics>Chapter 1 - Light - Reflection and Refraction>EXERCISE - 1C>Q 4
Draw a ray diagram showing the path of rays of light when it enters with oblique incidence from water into air.
MEDIUM
10th CBSE
IMPORTANT
Core Science Physics>Chapter 1 - Light - Reflection and Refraction>EXERCISE - 1C>Q 5
A pencil when dipped in water in a glass tumbler appears to be bent at the interface of air and water. Will the pencil appear to be bent to the same extent, if instead of water we use liquids like, kerosene or turpentine. Support your answer with reason.
HARD
10th CBSE
IMPORTANT
Core Science Physics>Chapter 1 - Light - Reflection and Refraction>EXERCISE - 1C>Q 6
How is the refractive index of a medium related to the speed of light? Obtain an expression for refractive index of a medium with respect to another in terms of speed of light in these two media?
MEDIUM
10th CBSE
IMPORTANT
Core Science Physics>Chapter 1 - Light - Reflection and Refraction>EXERCISE - 1C>Q 7
Refractive index of diamond with respect to glass is 1.6 and absolute refractive index of glass is 1.5. Find out the absolute refractive index of a diamond.  
HARD
10th CBSE
IMPORTANT
Core Science Physics>Chapter 1 - Light - Reflection and Refraction>EXERCISE - 1C>Q 8
An object is placed at a distance of 24 cm from the optical centre of a convex lens of focal length 18 cm. Find the distance of the image from the lens. What will be the height of the image if the object is 3.0 cm tall?
 
HARD
10th CBSE
IMPORTANT
Core Science Physics>Chapter 1 - Light - Reflection and Refraction>EXERCISE - 1C>Q 9
How far should an object be placed from a convex lens of focal length 20 cm to obtain its image at a distance of 30 cm from the lens? What will be the height of the image if the object is 6 cm tall?