HSC Science (Computer Science) ११ वीं कक्षा - Maharashtra State Board Question Bank Solutions

In Ohm’s experiments, the values of the unknown resistances were found to be 6.12 Ω, 6.09 Ω, 6.22 Ω, 6.15 Ω. Calculate the (mean) absolute error, relative error, and percentage error in these measurements.

Solve the numerical example.

If the length of a cylinder is l = (4.00 ± 0.001) cm, radius r = (0.0250 ± 0.001) cm and mass m = (6.25 ± 0.01) g. Calculate the percentage error in the determination of density.

Solve the numerical example.

If the formula for a physical quantity is X = `("a"^4"b"^3)/("c"^(1//3)"d"^(1//2))` and if the percentage error in the measurements of a, b, c and d are 2%, 3%, 3% and 4% respectively. Calculate percentage error in X.

Answer in one sentence.

Why bridges are unsafe after very long use?

Answer in one sentence.

What is an elastomer?

Answer in one sentence.

What do you mean by elastic hysteresis?

Answer in short.

What do you mean by brittle substance? Give any two examples.

Long answer type question.

Define stress and strain. What are their different types?

Long answer type question.

Draw a labelled graph of tensile stress against tensile strain for a metal wire up to the breaking point. In this graph show the region in which Hooke’s law is obeyed.

Answer in one sentence:

What is an elastomer?

Answer in one sentence:

What is an elastomer?

Answer in one sentence:

What is an elastomer?

Answer in one sentence:

What is an elastomer?

What is an elastomer?

Answer in one sentence:

What is an elastomer?

Answer in one sentence.

What is an elastomer?

Answer in one sentence.

What is an elastomer?

Answer in one sentence:

What is an elastomer?

Answer in one sentence:

What is an elastomer?

Answer in one sentence:

What is an elastomer?