Q:

What is the duration of the world’s shortest X–ray laser has been successfully created by the scientists?

A) 39 nanoseconds	B) 43 attoseconds
C) 15 picoseconds	D) 57 microseconds

Answer & Explanation Answer: B) 43 attoseconds

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Q:

What is the resistance (in Ω) of an electrical component if a current of 0.2 A passes through it on application of 8 V of potential difference across it?

A) 40	B) 1.6
C) 80	D) 3.2

Answer & Explanation Answer: A) 40

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Q:

What is the principal focus of a spherical mirror?

A) It is a point from which the rays of light appear to be coming from on the principal axis of a convex mirror	B) It is the point on the principal axis through which rays of light parallel to the principal axis pass after reflection or appear to be arising from this point on the principal axis
C) It is the centre of a hollow sphere of which the spherical mirror is a part	D) It is the midpoint of a spherical mirror

Answer & Explanation Answer: B) It is the point on the principal axis through which rays of light parallel to the principal axis pass after reflection or appear to be arising from this point on the principal axis

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Q:

In terms of size, Saturn ranks no. ___ in our Solar System.

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

Answer & Explanation Answer: B) 2

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Q:

Earth revolves around Sun. Who was the 1st one to present this theory?

A) Albert Einstein	B) Galileo
C) Copernicus	D) Newton

Answer & Explanation Answer: C) Copernicus

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Q:

Trypsin is present in which of the following?

A) Bile juice	B) Gastric juice
C) Saliva	D) Pancreatic juice

Answer & Explanation Answer: D) Pancreatic juice

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Q:

Which of the following city is NOT situated on the banks of any river

A) Surat	B) Cuttack
C) Bhopal	D) Mysore

Answer & Explanation Answer: C) Bhopal

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Q:

What is the local name given to the parliament of Pakistan?

A) Majilis	B) Majilis-e-Shoora
C) Saeima-e-majilis	D) Jatia Parliament

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