Lens faces can generally either be concave, or what, which is the opposite of concave?
- Correct Answer: convex
- spherical
- hollow
- elliptical
Explanation: One or both of the lens faces is part of a sphere and can be concave or convex.
More Random Questions
Q: With what does an electromagnetic wave start?
Ans: vibrating charged particle
Ans: vibrating charged particle
Q: On June 10, 2024, who won the Norway Chess title?
Ans: Ju Wenjun and Magnus Carlsen
Ans: Ju Wenjun and Magnus Carlsen
Q: Which modern drug is an example of an antipyretic?
Ans: Paracetamol
Ans: Paracetamol
Q: According to Ashtanga Hridayam, which Guna is predominant in Guduchi?
Ans: Laghu
Ans: Laghu
Q: Most hybrids are sterile because what genetic structures are not homologous and cannot pair during meiosis?
Ans: phenotypes
Ans: phenotypes
Q: Mount Semeru" volcano of which country erupted?
Ans: Indonesia
Ans: Indonesia
Q: As per the information of January 7, 2025, what has been produced the most in the country till 2023-24?
Ans: Coal (893.191 million tonnes)
Ans: Coal (893.191 million tonnes)
Q: What does a broken yellow line on the road mean?
Ans: Overtaking allowed
Ans: Overtaking allowed
Q: Which Mughal ruler faced the Battle of Samugarh?
Ans: Aurangzeb
Ans: Aurangzeb
Q: Which of the following is a complication of excessive Swedana?
Ans: Murcha
Ans: Murcha
Q: Who topped the 'Global Innovation Index 2024'?
Ans: Switzerland
Ans: Switzerland
Q: What is the fine for not carrying a PUC certificate?
Ans: ₹10,000
Ans: ₹10,000
Q: What was the share of Americans concerned about housing prices in April 2025?
Ans: 61%
Ans: 61%
Q: What is the most common cause of down syndrome?
Ans: chromosome 21
Ans: chromosome 21
Q: A bipolar patient in a mixed episode presents with suicidal ideation. Which advanced intervention is indicated?
Ans: Electroconvulsive therapy (ECT)
Ans: Electroconvulsive therapy (ECT)
