Which two of the following five physical parameters have the same dimensions?

(i) Energy density

(ii) Refractive index

(iii) Dielectric constant

(iv)Young's modulus

(v) Magnetic field

(A)

(ii) and (iv)

(B)

(iii) and (v)

(C)

(i) and (iv)

(D)

(i) and (v)

Question-2

The dimensional formula of potential

(A)

[ML^{2}T^{-3}]

(B)

[ML^{2}T^{-3}A]

(C)

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

(D)

[ML^{2}T^{-3}A^{-1}]

Question-3

Distance of a star from earth is 1.5 x 10^{11} m.If the angular size of the star is 2000″.Find the diameter of the star.

(A)

1.455 x 10^{9} m

(B)

14.55 x 10^{9} m

(C)

1.155 x 10^{5} m

(D)

1.455 x 10^{7} m

Question-4

The maximum and minimum temperatures at a place are(40.6 ± 0.3)°C and (32.4 ± 0.2)°C.Calculate the difference in the temperatures with error limits.

(A)

(8.2 ± 0.5)°C

(B)

(8.0 ± 5.0)°C

(C)

(8.2 ± 5.0)°C

(D)

(8.0 ± 0.5)°C

Question-5

Parallax angle of a heavenly body measured from two points diametrically opposite on the equator of the earth is 1.0 minute.If the radius of the earth is 6400 km,find the distance of the heavenly body from the earth.

(A)

4.4 x 10^{7} km

(B)

4.2 x 10^{6} km

(C)

4 x 10^{7} km

(D)

4.2 x 10^{5} km

Question-6

In SI system of unit,the unit of pressure is

(A)

Atmosphere

(B)

Dynes per square cm

(C)

Pascal

(D)

torr

Question-7

A Vernier Callipers with 1MSD = 1cm has 5 divisions as the vernier. The least count is

(A)

0.8 mm

(B)

0.8 cm

(C)

0.4 cm

(D)

0.5 cm

Question-8

The unit of energy in SI system is:

(A)

Electron Volt

(B)

Calorie

(C)

joule

(D)

Erg

Question-9

The sides of a rectangular lamina are (8.5 ± 0.2)cm and (5.6 ± 0.1) cm.Calculate the perimeter of the lamina with error limits.

(A)

(28.2 ± 0.6) cm

(B)

(2.82 ± 0.6) cm

(C)

(2.82 ± 6.0) cm

(D)

(28.2 ± 6.0) cm

Question-10

The dimensional formula of angular momentum is

(A)

MLT^{-2}

(B)

ML^{-1}T^{-}

(C)

M^{1}L^{2}T^{-1}

(D)

MLT^{-1}

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