Sawaal

 Physics Questions

Popular Latest Rated
Q:

Which color has the highest frequency?

A) Violet B) Red
C) Indigo D) Green
 
Answer & Explanation Answer: A) Violet

Explanation:

In VIBGYOR. It has colors ordered from highest to lowest frequency.

 

              Violet > Indigo > Blue > Green > Yellow > Orange > Red

 

That says Violet has the highest frequency.

We know, Speed of light = Frequency x Wavelength

=> As frequeny is inversely proportional to wavelength i.e, as frequwncy goes high wavelength goes down.

 

So, the violet color has the highest frequency.

Report Error

View Answer Report Error Discuss

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

3 5422
Q:

If an empty cylinder is half filled with a liquid, its center of gravity is 

A) shifted upwards B) shifted downwards
C) shifed neither upward nor downward D) shifted upward or downward depending on the density of the liquid
 
Answer & Explanation Answer: B) shifted downwards

Explanation:

Effect of adding liquid is to make the cylinder more bottom heavy which is a more stable position

Report Error

View Answer Report Error Discuss

Filed Under: Physics

28 5264
Q:

What is the maximum velocity with which a body of mass 'm' must enter a vertical loop of radius 'R'so that it can complete the loop?

A) 0  B) gR   C)  2gR  D)  5gR

A) A B) B
C) C D) D
 
Answer & Explanation Answer: D) D

Explanation:

To complete the vertical loop, the minimum speed required at the lowest point  = 5gR.

Report Error

View Answer Report Error Discuss

Filed Under: Physics
Exam Prep: AIEEE , GATE
Job Role: Analyst

6 5177
Q:

Number of basic SI unit is

A) 4 B) 7
C) 6 D) 5
 
Answer & Explanation Answer: B) 7

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Physics

6 5165
Q:

What type of simple machine is an axe?

A) Lever B) Wedge
C) Both A & B D) The screw
 
Answer & Explanation Answer: C) Both A & B

Explanation:

The simple machine Axe is made up of both the lever arm and a wedge.

                              what_type_of_simple_machine_is_an_axe1536562753.png image

Report Error

View Answer Report Error Discuss

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

4 5132
Q:

An atom bomb based upon the principal of ________

A) Nuclear fission B) Nuclear fussion
C) Controlled chain reaction D) None of these
 
Answer & Explanation Answer: A) Nuclear fission

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Physics

7 5125
Q:

When a ray of light is  refracted by a prism such that the angle of deviation is minimum then

A) the angle of emergence is equal to the angle of incidence B) the angle of emergence is greater than the angle of incidence
C) the angle of emergence is smaller than the angle of incidence D) the sum of the angle of incidence and the angle of emergence is equal to 90 degrees
 
Answer & Explanation Answer: A) the angle of emergence is equal to the angle of incidence

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Physics

5 5109
Q:

Two bulbs are fitted in a room in the domestic electric installation. One of them glows brighter than the other. Then

A) the brighter bulb has smaller resistance B) the brighter bulb has larger resistance
C) both the bulbs have the same resistance D) none of these
 
Answer & Explanation Answer: A) the brighter bulb has smaller resistance

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Physics

9 5043