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Light year is unit of …... ....

Light year is unit of …... .

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Define light year. Is it unit of time?

The polarisation of light proved that light is composed of ......

Which is the largest unit out of astronomical unit, light year and Parsec ?

Assertion : Light year and year, both measure time. Reason : Because light year is the time light takes to reach the earth from the sun.

Two stars are 10 light years away from the earth. They are seen through a telescope of objective diameter 30 cm. The wavelength of light is 600nm. To see the stars just resolved by the telescope, the minimum distance between them should be (1 light year = 9.46 × 10^15m ) of the order of :

The present age of father is x years and the total age of his two sons is y years, then the sum of their ages 5 years hence will be ..... years.

If the unit of force is 100 N, unit of length is 10 m and unit of time is 100 s, what is the unit of mass in this system of units ?

A parabola mirror is kept along y^2=4x and two light rays parallel to its axis are reflected along one straight line. If one of the incident light rays is at 3 units distance from the axis, then find the distance of the other incident ray from the axis.

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KUMAR PRAKASHAN-UNITS AND MEASUREMENT-SECTION -C (OBJECTIVE QUESTIONS (VSQS)
  1. Which are inferior planets ?

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  2. What is elongation ?

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  3. In modern times which method is used to measure the distance between t...

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  4. "Fundamental unit of length is kilometer and fundamental unit of mass ...

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  5. x=a+bt+ct^(2)=x in metre and tis in sec then write unit of a, b, c.

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  6. Light year is unit of …... .

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  7. A physical quantity has unit ("Watt")/(m^(2)) write its dimension.

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  8. y=x^(2)r+M^(1)L^(1)T^(-2) is dimensionally correct. If r represent dis...

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  9. Pressure P = FK where F is force, obtain dimension of K.

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  10. Obtain dimension of rho gv where, rho = density, g = acceleration, v...

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  11. Explain supplementary quantities and their unit of SI system.

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  12. The mass of an object is (225 +- 0.05) gm calculate percentage error i...

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  13. If theta(1)=(25.5+-0.1)^(@)C and theta(2)=(35.3+-0.1)^(C), then find t...

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  14. Subtract according to significant digit. 3.9xx10^(5)-2.5xx10^(4)

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  15. Why 10^(6) km cannot be represented by Mkm?

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  16. Volume and total surface area of a cube is equal. Find volume of cube....

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  17. Write no. of significant digit in (3204.80)xx10^(5)

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  18. Which number is obtained by rounding off 96378 upto 2 significant digi...

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  19. Explain "By changing unit zero are added. This will not change number ...

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  20. By suitable example show that "Trailing zero in nonzero number are not...

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