### Sample Test Physics

1
The volume of a cube of side 1 cm is equal to .....m3
• 1 10-7
• 2 10-6
• 3 10-4
• 4 10-5
2
1 kg m2 s2 = ..........g cm2 s2 ?
• 1 10-6
• 2 10-4
• 3 10-5
• 4 10-7
3
A goldsmith put a ruby in a box weighing 1.2 kg. Find the total mass of the box and ruby applying principle of significant figures. The mass of the ruby is 5.42 g.
• 1 1.2 kg
• 2 1.20542 kg
• 3 0.00542 kg
• 4 1.19458 kg
4
Convert 76 cm of mercury pressure into N m-2 using the method of dimensions.
• 1 101292.8 N m-2
• 2 76 Nm-2
• 3 1.01 × 105 N m-2
• 4 1.01 × 1010 N m -2
5
Red light has a wavelength of 7000 Å. In μm it is
• 1 7 μm
• 2 0.7 μm
• 3 70 μm
• 4 0.07 μm
6
The length of a body is measured as 3.51 m. If the accuracy is 0.01 m, then the percentage error in the measurement is
• 1 2.51 %
• 2 1 %
• 3 0.28 %
• 4 0.035 %
7
The dimensional formula for Planck’s constant is
• 1 MLT
• 2 ML3T 2
• 3 MLoT4
• 4 ML2T–1
8
1/2mv2 = mghx where m is mass, v is velocity, g is acceleration due to gravity and h is height. The value of x is equal to
• 1 3
• 2 4
• 3 1
• 4 2
9
1 kg m2 s2 = ..........g cm2 s2 ? .
• 1 10-6
• 2 10-4
• 3 10-5
• 4 10-7
10
• 1 4.8 g cm 3
• 2 8.4 g cm 3
• 3 5.7 g cm 3
• 4 1.2 g cm 3