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Q:

The reflector of a search light is a :

A) Convex mirror B) Concave mirror
C) Plane mirror D) Cylindrical mirror
 
Answer & Explanation Answer: B) Concave mirror

Explanation:
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Filed Under: Physics
Exam Prep: CAT , Bank Exams , AIEEE

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Q:

In total internal reflection, the light travel from

A) rarer to denser medium and it occurs with no loss of intensity B) denser to rarer medium and it occurs with no loss of intensity
C) rarer to denser medium and it occurs with loss of intensity D) denser to rarer medium and it occurs with loss of intensity
 
Answer & Explanation Answer: B) denser to rarer medium and it occurs with no loss of intensity

Explanation:

According to wave theories, for Total internal reflection tohappen: Light must travel from denser medium to rarer medium. Angle of incidence should be greater than critical angle. As in case of TIR, the image is perfectly clear, it implies that there has been no loss of intensity.

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Q:

What is the name of the device used to convert alternating current into direct current ?

A) Ammeter B) Galvanometer
C) Rectifier D) Transformer
 
Answer & Explanation Answer: C) Rectifier

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Q:

An image formed by a concave mirror on a screen is called __________?

A) Virtual image B) Real image
C) Inverted image D) Erect image
 
Answer & Explanation Answer: B) Real image

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Q:

Why does water tank appear shallower when viewed from the top?

A) Due to reflection B) Due to refraction
C) Due to diffraction D) Due to total internal reflection
 
Answer & Explanation Answer: B) Due to refraction

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Q:

What is the difference between Save and Save As?

Answer

Use SAVE when you want to update the lastly preserved or to revise an existing document or file with the latest content.


Whereas


Use SAVE AS when you are creating a new document/file or an existing document/file to a new location. This will keep the original document untouched in its original format and create a new document with a new name.


 

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Q:

In the following question, four words are given out of which one word is correctly spelt. Select the correctly spelt word.

A) imunize B) immunaize
C) imunaize D) immunize
 
Answer & Explanation Answer: D) immunize

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Filed Under: English
Exam Prep: Bank Exams

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Q:

In the following question, four words are given out of which one word is correctly spelt. Select the correctly spelt word.

A) daclination B) declineation
C) declination D) daclineation
 
Answer & Explanation Answer: C) declination

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Filed Under: English
Exam Prep: Bank Exams , CAT

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