1. T=2π√(L/g)

2. T=1/2π √(L/g)

3. T=2π√(g/L)

4. T=1/2π √(g/L)

1. What! You don’t mean to say so?

2. Give me what you can.

3. What book do you want?

4. What do you want?

1. সপ্তম

2. ষষ্ঠ

3. দ্বিতীয়

4. প্রথম

1. 8 আগস্ট 1993

2. 16 ডিসেম্বর 2005

3. 26 মার্চ 1998

4. 25 নভেম্বর 1993

1. India is trying to catch up with the advanced countries.

2. A drowning man catches up a straw.

3. He cast about his shoes.

4. He is casting off for an opportunity.