What is the distance in km of a quasar (farthest heavenly bodies) from which light takes 3 billion years to reach us?

(A)

2.8 x 10^{12} km

(B)

2.8 x 10^{22} km

(C)

3.8 x 10^{22}km

(D)

3.72 x 10^{22} km

Question-2

The error in the measurement of radius of a sphere is 0.4%.Find the permissible error in the surface area.

(A)

8 %

(B)

0.8 %

(C)

7 %

(D)

0.7 %

Question-3

Find the number of times the heart of a human being beats in 10 years.Assume that the heart beats once in 0.8 sec.

(A)

3.942 x 10^{8} beats

(B)

3.942 x 10^{3 }beats

(C)

3.942 x 10^{10} beats

(D)

3.942 x 10^{12} beats

Question-4

The SI unit for length is

(A)

Kilometer

(B)

foot

(C)

meter

(D)

centimeter

Question-5

If σ = surface charge density,ε = electric permeability,the dimensions of σ/ε are same as

(A)

Electric force

(B)

Electric field intensity

(C)

Electric charge

(D)

Pressure

Question-6

The time period of a simple, pendulum is given by Tαl^{a} g^{h } . The value of a and b are

(A)

1, ½

(B)

½, -1

(C)

½, -½

(D)

½,½

Question-7

The angle subtended by a satellite by the two directions of observation is 2.552 x 10^{-2} rad.If the diameter of earth is 1.276 x 10^{7}m. What is the distance of the satellite from the earth?

(A)

6 x 10^{8 } m^{ }

(B)

5 x 10^{8 }m

(C)

2.5 x 10^{8}m

(D)

4 x 10^{8 }m

Question-8

In the addition of following numbers with respect to significant figures find the correct answer 8.31 + 10.6723 + 0.0043

(A)

18.9866

(B)

19

(C)

18.99

(D)

18.987

Question-9

The dimensions of angular velocity are

(A)

[MLT]

(B)

[ML^{-1}T^{-2]}

(C)

[M^{0}L^{0}T^{-1}]

(D)

[MLT^{2}]

Question-10

In an experiment the angles are required to be measured using an instrument.29 divisions of the main scale exactly coincide with the 30 divisions of the vernier scale.If the smallest division of the main scale is half - a - degree (=0.5°), then the least count of the instrument is

(A)

one minute

(B)

half minute

(C)

one degree

(D)

half degree

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