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Q:

Instrument for measuring rainfall is called

A) Lucimeter B) Galactometer
C) Hyetometer D) Hygrometer
 
Answer & Explanation Answer: C) Hyetometer

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Q:

1kWh = ?

A) 3.6 x 105 J B) 3.6 x 106 J
C) 3.6 x 10-5 J D) 3.6 x 10-6 J
 
Answer & Explanation Answer: B) 3.6 x 106 J

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Q:

Which one of the following is the correct sequence of passage of light in a compound microscope?

A) Condenser -Objective lens -Eye -piece -Body tube B) Objective lens -Condenser -Body tube -Eye piece
C) Condenser -Objective lens -Body tube -Eyepiece D) Eyepiece -Objective lens -Body tube -Mirror
 
Answer & Explanation Answer: C) Condenser -Objective lens -Body tube -Eyepiece

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Q:

What is the SI unit of Torque?

A) newton/meter B) newton meter
C) newton second D) newton/meter squared
 
Answer & Explanation Answer: B) newton meter

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Q:

Rate of change of momentum is

A) Area B) Pressure
C) Force D) Velocity
 
Answer & Explanation Answer: C) Force

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Q:

The  optical  phenomenon  that  is  primarily responsible  for  the  observation  of  rainbow on a rainy day is 

A) diffraction B) interference
C) dispersion D) reflection
 
Answer & Explanation Answer: C) dispersion

Explanation:

A rainbow is a natural spectrum appearing in the sky after a rain shower. It is caused by dispersion of sunlight by tiny water droplets, present in the atmosphere. A rainbow is always formed in a direction opposite to that of the Sun. The water droplets act like small prisms. They refract and disperse the incident sunlight, then reflect it internally, and finally refract it again when it comes out of the raindrops.

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Q:

The time taken by a pendulum to complete one oscillation is called its?

A) Maximum speed B) Average speed
C) Time period D) Time interval
 
Answer & Explanation Answer: C) Time period

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Q:

_____________________ states that the total current entering a junction is equal to the total current leaving the junction.

A) Lenz's Law B) Hooke's Law
C) Ohm's Law D) Kirchhoff's First Law
 
Answer & Explanation Answer: D) Kirchhoff's First Law

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