Q:

A periscope works by the principle of

A) Total internal reflection	B) Refraction
C) Diffraction	D) Reflection & Refraction

Answer & Explanation Answer: A) Total internal reflection

Explanation:

A periscope is an optical instrument that uses a system of prisms, lenses, or mirrors to reflect images through a tube.

per11526634345.jpg image

Light from a distant object strikes the top mirror and is then reflected at an angle of 90 degrees down the periscope tube. At the bottom of the periscope, the light strikes another mirror and is then reflected into the viewer’s eye.

Hence, A periscope works by the principle of Total internal reflection.

Report Error

View Answer Report Error Discuss

Filed Under: Physics
Exam Prep: GATE , CAT , Bank Exams , AIEEE
Job Role: Bank PO , Bank Clerk , Analyst

37 14187

Q:

Improve the bracketed part of the sentence.

With its overall popularity sliding, (the party will have been working hard) to bring in the next generation of leaders.

A) the party will have to work hard	B) the party will have to hardly work
C) the party will have to work hardly	D) No improvement

Answer & Explanation Answer: A) the party will have to work hard

Explanation:

Report Error

View Answer Report Error Discuss

Filed Under: English
Exam Prep: Bank Exams

0 14186

Q:

What has a neck but no head and wears a cap?

Answer

A bottle has a neck but no head and wears a cap.

what_has_a_neck_but_no_head1603889734.jpg image

Workspace

Report Error

View answer Workspace Report Error Discuss

Subject: Logic Puzzles Exam Prep: GRE , GATE , CAT , Bank Exams , AIEEE
Job Role: IT Trainer , Database Administration , Bank PO , Bank Clerk , Analyst

31 14186

Q:

Harshacharita the biography of Harsha, was written by

A) Banabhatta	B) Sudraka
C) Sri Harsha	D) Gunadhva

Answer & Explanation Answer: A) Banabhatta

Explanation:

Report Error

View Answer Report Error Discuss

Filed Under: Indian History

20 14180

Q:

Valency of an element depends on which of the following?

I. Number of losing electron

II. Number of gaining electron

III. Number of sharing electron

A) Only I and II	B) Only I and III
C) Only II and III	D) All I, II and III

Answer & Explanation Answer: D) All I, II and III

Explanation:

Report Error

View Answer Report Error Discuss

Filed Under: Chemistry
Exam Prep: Bank Exams

0 14164

Q:

Two cubes have their volumes in the ratio 1 : 27. Find the ratio of their surface areas.

A) 2:9	B) 3:9
C) 1:9	D) 4:9

Answer & Explanation Answer: C) 1:9

Explanation:

Let their edges be a and b. Then,

a3/b3 = 1/27 (or) (a/b)3 = (1/3)3 (or) (a/b) = (1/3).

\Ratio of their surface area = 6a2/6b2 = a2/b2 = (a/b)2 = 1/9, i.e. 1:9.

Report Error

View Answer Report Error Discuss

Filed Under: Quantitative Aptitude - Arithmetic Ability

31 14161

Q:

Improve the bracketed part of the sentence.

The tribunal noted that the driver of the (offend) truck did not lead any evidence in rebuttal of the claims.

A) offencing	B) offending
C) offence	D) No improvement

Answer & Explanation Answer: B) offending

Explanation:

Report Error

View Answer Report Error Discuss

Filed Under: English
Exam Prep: Bank Exams

0 14159

Q:

Choose the correctly spelt word

The school alumni gathering put us in a mood.

A) Remniscent	B) Reminisent
C) Reminiscent	D) Reminicent

Questions

Quick Links