The dimensional formula of gravitational constant, G, is, a) [M^-1L^3T^-2] b) [M^-1L^2T^-2] c) [M^-1L^3T^2]...

1. The dimensional formula of gravitational constant, G, is,
a) [M^-1L^3T^-2] b) [M^-1L^2T^-2] c) [M^-1L^3T^2] d) [M^-1L^2T^3]
2. Number of significant digits in 1.0250 is
a) 4 b) 5 c) 3 d) 2
3. The dot product of two orthogonal vectors is always
a) non-zero b) zero c) only positive d) only negative
4. The X-component of vector 2i + 3j - k is
a) 3/2 b) 2 c) 2/3 d) 2/3
5. Which of the following temperature scales is the most sensitive?
a) Kelvin b) Celsius c) Fahrenheit d) Reumer
6. A pendulum clock with its arm made of brass ........ in winter.
a) runs faster b) runs slower c) runs at same pace d) stops due to freezing
7. The relation between β and γ is
a) 3β = 2γ b) β = 3γ c) 2β = 3γ d) β = 2γ