Some examples from this set of practice questions
1.
What are conditions of total internal reflection?
Answer: Ans. - (i) Angle of incidence must be greater than critical angle. (ii) Light ray should enter from denser to rarer medium.
2.
When the value of refractive index is less than one and more than one?
Answer: Ans. Refractive index of rarer medium with respect to denser medium is less than one and that of denser medium with respect to rarer medium is more than one.
3.
If a concave mirror and convex lens are dipped in water. What will be the changes in their focal length ?
Answer: Ans. The focal length of concave mirror will remain unchanged and that of convex lens will increase.
4.
Define magnification of a spherical mirror.
Answer: Ans. The ratio of size of image to size of object is known as magnification. \" m = h\'/h = v/u. \"
5.
Concave mirror is used for shaving, why?
Answer: Ans. When the object is within the focal length of the concave mirror then virtual, erect and magnified image is formed. This is the reason that concave mirror is used for shaving.
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Stuvia is a marketplace, so you are not buying this document from us, but from seller vishwasverma1. Stuvia facilitates payment to the seller.
No, you only buy these notes for $7.99. You're not tied to anything after your purchase.
4.6 stars on Google & Trustpilot (+1000 reviews)
76799 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now
