MEDIUM
10th CBSE
IMPORTANT
Earn 100

Light enters from air into diamond which has a refractive index of 2.42. Calculate the speed of light in diamond. The speed of light in air is 3.0×108 m s-1.

Important Questions on Light - Reflection and Refraction

MEDIUM
10th CBSE
IMPORTANT
Science Part-I NEW ERA PHYSICS Textbook for Class X>Chapter 4 - Light - Reflection and Refraction>PROBLEMS FOR PRACTICE>Q 5
How much time will light take to cross 2 mm thick glass pane if refractive index of glass is 32?
MEDIUM
10th CBSE
IMPORTANT
Science Part-I NEW ERA PHYSICS Textbook for Class X>Chapter 4 - Light - Reflection and Refraction>PROBLEMS FOR PRACTICE>Q 6
The refractive index of glass and water with respect to air are 32 and 43 respectively. What will be the refractive index of water with respect to glass?
MEDIUM
10th CBSE
IMPORTANT
Science Part-I NEW ERA PHYSICS Textbook for Class X>Chapter 4 - Light - Reflection and Refraction>PROBLEMS FOR PRACTICE>Q 1
An object is placed at a distance of 12.5 cm from a convex lens of focal length 25 cm. Find the position and nature of the image.
MEDIUM
10th CBSE
IMPORTANT
Science Part-I NEW ERA PHYSICS Textbook for Class X>Chapter 4 - Light - Reflection and Refraction>PROBLEMS FOR PRACTICE>Q 2
A 2 cm high object is placed at a distance of 12 cm in front of a convex lens of focal length 20 cm. Find the position and size of the image.
MEDIUM
10th CBSE
IMPORTANT
Science Part-I NEW ERA PHYSICS Textbook for Class X>Chapter 4 - Light - Reflection and Refraction>PROBLEMS FOR PRACTICE>Q 3
An object is placed at a distance of 50 cm from a concave lens of focal length 25 cm. Find the position and nature of the image.
MEDIUM
10th CBSE
IMPORTANT
Science Part-I NEW ERA PHYSICS Textbook for Class X>Chapter 4 - Light - Reflection and Refraction>PROBLEMS FOR PRACTICE>Q 4
A convex lens has focal length of 18 cm. At what distance from the lens an object be placed so that it forms a real image three times the size of the object?
MEDIUM
10th CBSE
IMPORTANT
Science Part-I NEW ERA PHYSICS Textbook for Class X>Chapter 4 - Light - Reflection and Refraction>PROBLEMS FOR PRACTICE>Q 5
An object 50 cm tall is placed on the principal axis of a convex lens. Its 20 cm tall image is formed on the screen placed at a distance of 10 cm from the lens. Calculate the focal length of the lens.
MEDIUM
10th CBSE
IMPORTANT
Science Part-I NEW ERA PHYSICS Textbook for Class X>Chapter 4 - Light - Reflection and Refraction>PROBLEMS FOR PRACTICE>Q 6
A concave lens has focal length of 10 cm. At what distance from the lens a 5 cm tall object be placed so that it forms an image at 6 cm from the lens? Also calculate the size of the image formed.