Vanishree Singh

Sign Up

Sign In

Forgot Password

Lost your password? Please enter your email address. You will receive a link and will create a new password via email.

You must login to ask question.

Ask A Question

Vanishree Singh

Ask Vanishree Singh

0Followers

0Questions

Ashok0210

Asked: March 21, 2021In: Class 12 Physics

An object of size 3.0 cm is placed 14 cm in front of a concave lens of focal length 21 cm. Describe the image produced by the lens. What happens if the object is moved further away from the lens?

Class 12 Physics CBSE and UP Board Ray Optics and Optical Instruments Chapter-9 Exercise 9.9 NCERT Solutions for Class 12 Physics Chapter 9 Question-9

Ashok0210

Asked: March 21, 2021In: Class 12 Physics

A beam of light converges at a point P. Now a lens is placed in the path of the convergent beam 12 cm from P. At what point does the beam converge if the lens is (a) a convex lens of focal length 20 cm, and (b) a concave lens of focal length 16 cm?

Class 12 Physics CBSE and UP Board Ray Optics and Optical Instruments Chapter-9 Exercise 9.8 NCERT Solutions for Class 12 Physics Chapter 9 Question-8

Ashok0210

Asked: March 21, 2021In: Class 12 Physics

Double-convex lenses are to be manufactured from a glass of refractive index 1.55, with both faces of the same radius of curvature. What is the radius of curvature required if the focal length is to be 20 cm?

Class 12 Physics CBSE and UP Board Ray Optics and Optical Instruments Chapter-9 Exercise 9.7 NCERT Solutions for Class 12 Physics Chapter 9 Question-7

Ashok0210

Asked: March 21, 2021In: Class 12 Physics

A man with normal near point (25 cm) reads a book with small print using a magnifying glass: a thin convex lens of focal length 5 cm. (a) What is the closest and the farthest distance at which he should keep the lens from the page so that he can read the book when viewing through the magnifying glass? (b) What is the maximum and the minimum angular magnification (magnifying power) possible using the above simple microscope?

Class 12 Physics CBSE and UP Board Ray Optics and Optical Instruments Chapter-9 Exercise 9.28 NCERT Solutions for Class 12 Physics Chapter 9 Question-28

Ashok0210

Asked: March 21, 2021In: Class 12 Physics

A person looking at a person wearing a shirt with a pattern comprising vertical and horizontal lines is able to see the vertical lines more distinctly than the horizontal ones. What is this defect due to? How is such a defect of vision corrected?

Class 12 Physics CBSE and UP Board Ray Optics and Optical Instruments Chapter-9 Exercise 9.27 NCERT Solutions for Class 12 Physics Chapter 9 Question-27

1 … 17 18 19

Vanishree Singh

An object of size 3.0 cm is placed 14 cm in front of a concave lens of focal length 21 cm. Describe the image produced by the lens. What happens if the object is moved further away from the lens?

A beam of light converges at a point P. Now a lens is placed in the path of the convergent beam 12 cm from P. At what point does the beam converge if the lens is (a) a convex lens of focal length 20 cm, and (b) a concave lens of focal length 16 cm?

Double-convex lenses are to be manufactured from a glass of refractive index 1.55, with both faces of the same radius of curvature. What is the radius of curvature required if the focal length is to be 20 cm?

A person looking at a person wearing a shirt with a pattern comprising vertical and horizontal lines is able to see the vertical lines more distinctly than the horizontal ones. What is this defect due to? How is such a defect of vision corrected?

Which is the best website providing NCERT Solutions?

NCERT Books

Where can I get NCERT books in PDF format?

NIOS

NCERT Solutions

Sign Up

Sign In

Forgot Password

Discussion Forum Latest Questions