Gajar Matar (Carrots with Peas)

Ingredients: 2 cups carrots diced in about ½ inch pieces 1 cup potato cubed in about ½ inch pieces 1 cup green peas 2 tablespoons oil 1 teaspoon carom seeds (ajwain) 4 whole red chilies 1 tablespoon coriander powder (dhania) 1/2 teaspoon turmeric (haldi) 1 teaspoon salt 1 teaspoon lemon juice