Busy. Please wait.
or

show password
Forgot Password?

Don't have an account?  Sign up 
or

Username is available taken
show password

why


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account.
We do not share your email address with others. It is only used to allow you to reset your password. For details read our Privacy Policy and Terms of Service.


Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.
Don't know
Know
remaining cards
Save
0:01
To flip the current card, click it or press the Spacebar key.  To move the current card to one of the three colored boxes, click on the box.  You may also press the UP ARROW key to move the card to the "Know" box, the DOWN ARROW key to move the card to the "Don't know" box, or the RIGHT ARROW key to move the card to the Remaining box.  You may also click on the card displayed in any of the three boxes to bring that card back to the center.

Pass complete!

"Know" box contains:
Time elapsed:
Retries:
restart all cards
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how

Lenses

Stack #18787

QuestionAnswer
A converging lens is fatter at the centre than at its edge, it will bring together a beam of light, another name for this lens is? A convex lens
A lens that spreads out the beam of light and is thinner in the middle than at its edges is ? A diverging lens
The lens converges the parallel beam through a point called the principal focus, the distance from the lens to this point is called the focal length, what is the formula relating the focal length to the power of the lens? P = 1/f The unit is the dioptre
What is the formula for the refractive index between two materials? sin i/sin r = V1/V2
The equation connecting the distance of an object from the lens and the distance for its image is? 1/u + 1/v = 1/f Where u is the object to lens distance and v the image to lens distance
Created by: stevie